Ischia is a volcanic island in the Bay of Naples, dominated by Mount Epomeo. It's known for its thermal springs: many hotels fill their pools with this naturally hot water. Like a naturally heated pool, these thermal pools let you swim in warm water even out of season. The selection only includes places where a source confirms the water is warm. I've selected 41 places, all rated at least 8/10; the top-rated is Albergo La Reginella (8.9/10).
Each city has its own selection, with a page for each type of accommodation.
Places are ranked from highest to lowest rated. The yellow bubble shows the advertised water temperature, when it's known.
41 places shown
The pool. Five outdoor and two indoor pools, fed with thermal water or seawater.
The hot tub. Hot tub (possibly at extra cost) and sauna.
The pools score very well (9.5/10), but a few travellers would like them cleaned more often. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. According to the review summary, the pools close at around 20:00.
The pool. Thermal pools at several temperatures according to the listing summary; only one outdoor pool appears among the facilities.
Travellers rate the pools 9.5/10, but some complain about smoking around the pools and a shortage of sunloungers. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Swim caps are compulsory; the hotel closes from 1 November to 1 May.
The pool. Partly covered thermal pool, with a hydromassage area and waterfall.
Travellers find the thermal pool relaxing after the beach. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Adults-only hotel.
The pool. One indoor pool at the wellness centre, a large outdoor pool and small hydromassage pools.
Travellers find the pool pleasant. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Pool towels are charged as an extra.
The pool. Two thermal spring-water pools in the garden, an indoor thermal pool in the spa, a heated outdoor pool and a warm pool with jets.
The hot tub. Hot tub in some suites.
A journalist who stayed at the hotel describes the two pools fed by the island's mineral waters and the spa's indoor thermal pool. I haven't found any guest reviews on the temperature.
Guide's tip. Some pools are seasonal: ask which ones will be open during your stay.
The pool. Five outdoor and three indoor pools, including a mosaic spa pool; thermal pools are mentioned.
The hot tub. Hot tubs mentioned in travellers' tips.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Compare the pools once you're there: the listing doesn't say which are thermal.
The pool. An outdoor pool and an indoor pool reached through the spa; reviews mention thermal pools.
The hot tub. Hot tub.
Travellers enjoy the pool areas. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether access to the spa's indoor pool is included.
The pool. One indoor pool and one seasonal outdoor pool.
The hot tub. Hot tub and sauna.
Travellers rate the pools 9.5/10 and find them well maintained. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool is thermal.
The pool. Four pools, one of them indoors; the large saltwater pool is heated. Thermal spa.
The hot tub. Hot tub fed by the thermal springs.
A travel blogger invited by the hotel describes a very warm saltwater pool (around 32 °C), but a cooler children's pool. On Kayak the pool scores 9/10.
Guide's tip. If you're with family, note that the children's pool isn't as warm as the main pool.
The pool. Two indoor pools, a seasonal outdoor pool and a children's pool; the listing mentions a heated pool among the facilities.
The hot tub. Hot tub and sauna.
Travellers mainly praise the number and beauty of the pools. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The outdoor pool only opens in season: rely on the indoor pools outside summer.
The pool. Three pools: an indoor pool, an outdoor infinity pool and a children's pool. A heated pool appears in the list of facilities, without saying which one.
The hot tub. Hot tub, hammam and sauna.
The review summary mentions three pools, ranging from warmest to coolest. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask which pool is heated before booking.
The pool. Indoor and outdoor pools; neither the heating nor whether the water is thermal is specified.
Some guests come for the hotel's thermal facilities. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool is fed with thermal water.
The pool. One indoor pool and one seasonal outdoor pool; the hotel offers thermal treatments, but the listing doesn't say whether the pools are thermal.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool uses thermal water.
The pool. One indoor pool and one outdoor pool; heating is only mentioned in an automated review summary.
Travellers like the pool area, though some find it a little dated. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The outdoor pool may be closed depending on the season.
The pool. Three pools fed with thermal water: two indoor and one outdoor, open in season from 8 am to 7.30 pm.
Guests find the pools beautiful, without mentioning the water temperature.
Guide's tip. Out of season, go for the two indoor pools: the outdoor one only opens in fine weather.
The pool. Two outdoor thermal pools and a hot tub; one photo also shows a mosaic indoor pool, which the text doesn't confirm.
The hot tub. Hot tub.
The review summary mentions a warm outdoor pool and popular thermal pools, with no direct quote from a traveller.
Guide's tip. Ask about the outdoor pools' temperature if you're coming out of season.
The pool. Indoor pool, outdoor pool and children's pool; one guest mentions thermal pools in the spa.
The hot tub. Hot tub among the amenities, plus a suite with its own hot tub.
Guests praise the pools and the spa; one talks of thermal pools, without giving the temperature.
Guide's tip. Ask the hotel which pools are fed with thermal water.
The pool. A small indoor pool, with hammam and sauna.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The pool is small: don't count on swimming lengths.
The pool. One indoor pool, one outdoor pool and a hot tub.
The hot tub. Hot tub.
Families and couples enjoy the indoor and outdoor pools. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the pools use thermal water.
The pool. Heated outdoor saltwater pool; spa fed by the estate's thermal springs, with mineral-water pools and warm Kneipp-style pools.
Guests appreciate the pool and the spa, well kept and included in the room rate, without mentioning the water temperature.
Guide's tip. Access to the thermal spa is included: make the most of it on cooler days.
The pool. Two indoor and four outdoor pools, including thermal pools; some of the outdoor pools are seasonal.
Travellers appreciate the variety of pools, especially the thermal pools; one guest mentions a very good open-air thermal pool. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Some guests think the spa could be better: focus on the pools instead.
The pool. One indoor pool and one outdoor pool, with a thermal pool mentioned in reviews.
The hot tub. Hot tub.
Travellers love the spa and the thermal pool. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask which pools use thermal water.
The pool. An indoor thermal pool and a rooftop outdoor pool overlooking the harbour.
The hot tub. Jacuzzi and hammam.
Travellers enjoy the thermal pool; some find the rooftop pool small.
Guide's tip. The rooftop pool is best enjoyed in summer; in winter, head for the indoor thermal pool.
The pool. One indoor pool, one outdoor pool and a hot tub; the listing doesn't say whether the pools are thermal.
The hot tub. Hot tub.
Travellers find the pools and thermal baths relaxing and well kept. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool is thermal.
The pool. Several pools: indoor pool, outdoor pool, adults-only pool and infinity pool. The listing presents the thermal pools as one of the hotel's highlights.
The hot tub. Hot tub near the pools, plus a hammam and sauna.
Travellers find the pools beautiful and relaxing. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The pool bar only opens in the afternoon and evening.
The pool. One indoor pool and one seasonal outdoor pool; reviews and Q&As mention a thermal pool without saying which one.
Travellers rate the pools 9.5/10. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Get confirmation of which pool is thermal.
The pool. One indoor pool, one seasonal outdoor pool and two hot tubs.
The hot tub. Two hot tubs.
Reviews of the pool area are positive, but some guests found the pool closed for works without having been told. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Check that the pools are open on your dates.
The pool. One indoor pool and one seasonal outdoor pool; the review summary mentions a thermal pool.
The hot tub. Hot tub and hammam.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The outdoor pool only opens in season.
The pool. Two outdoor pools, one indoor pool, a children's pool and four hot tubs; thermal pools are mentioned at the spa.
The hot tub. Four hot tubs.
Reviews are mixed: six travellers found the rooms disappointing and the pool poorly maintained. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Read recent reviews on pool cleanliness before booking.
The pool. One indoor pool and a hot tub, plus a seawater pool at the private beach.
The hot tub. Hot tub.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool is heated or thermal.
The pool. One indoor pool and one outdoor pool; the thermal baths are part of the spa.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the indoor pool is thermal.
The pool. Three indoor and two outdoor pools (seasonal); the spa uses thermal water.
The hot tub. Hot tub.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The outdoor pools only open in season.
The pool. An indoor thermal-water pool at the spa and an outdoor pool facing the sea.
Travellers rate the pools 9.5/10 and find them well maintained. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask when the outdoor pool is open.
The pool. Indoor and outdoor thermal-water pools; a wellness circuit is included according to the listing.
The hot tub. Hot tub.
The listing warns that the water can be very hot because of the thermal springs, which isn't to everyone's taste.
Guide's tip. If you prefer cooler water, ask whether there's a less hot pool.
The pool. One indoor pool and one outdoor pool; the listing doesn't say whether they're thermal.
Travellers find both pools large and clean. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Ask whether the pools use thermal water.
The pool. Indoor and outdoor thermal pools fed by the island's volcanic hot springs; the listing says they can be used in every season.
Travellers appreciate the thermal pool and how well it's kept. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Check the hotel's opening dates if you're coming in winter.
The pool. One indoor pool and one seasonal outdoor pool.
Travellers find the pool area relaxing and clean. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The Castiglione thermal park is about two kilometres away.
The pool. An indoor pool at the spa and a seasonal outdoor pool; the Q&As mention a warm geothermal pool and a heated outdoor pool.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Get the outdoor pool's temperature confirmed outside summer.
The pool. An indoor thermal pool and an outdoor thermal pool lit up in the evening.
Travellers rate the pools 9.5/10. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. The Poseidon thermal gardens are about a kilometre away if you fancy a change.
The pool. Outdoor pool and a thermal pool carved into the rock, with a hot tub in the outdoor areas.
The hot tub. Outdoor hot tub.
One traveller describes enjoying the thermal pool after sunset; another liked the hot tub in the garden.
Guide's tip. Get the thermal pool's opening period confirmed.
The pool. One outdoor pool; the listing photos show an indoor thermal pool at the spa and a second covered pool.
Travellers praise the quality and variety of the pools. I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Get access to the indoor thermal pool confirmed: it's only mentioned in the photo captions.
These places don't have a confirmed heated pool, but they do have a hot tub: the water is hot all year round. A good way to relax in the warm.
These places were suggested to us directly by their owners. The heated pool is declared by them; they don't yet have enough guest reviews to join the selection.
In my selection, the top-rated is Albergo La Reginella (Hotel), with 8.9/10 (667 reviews · Kayak). Next come Hotel Villa Durrueli Resort & Spa (8.9/10) and Parco Maria Hotel Terme (8.9/10).
None of the places selected on Ischia clearly advertises a pool heated all year round. At Parco Maria Hotel Terme, heating is seasonal (seasonal (hotel closed november to april)). Albergo La Reginella, Hotel Villa Durrueli Resort & Spa and Hotel Terme Tritone Resort & Spa have an indoor pool, sheltered from the wind. Either way, ask for the heating dates before you book.
Advertised temperatures: 32 °C at Regina Isabella. For the other places the temperature isn't published: ask the property.
Yes: Albergo La Reginella, Botania Relais & Spa and Hotel Terme Tritone Resort & Spa also have a hot tub in addition to the heated pool.
The word "heated" on a booking page isn't enough. Every place must have a rating of at least 8/10 (or 4/5) and carries one of these four levels.
Guests mention the heated water in their reviews, with the season when they say so.
A journalist or guide who stayed there describes the heated pool.
The hotel or the platform says so, but I haven't yet found a review that confirms it.
Heating isn't specified, but the water is sheltered from the wind and cold air. Ask for the temperature before you book.
I left these out because guests report water colder than advertised, or because no heating or indoor pool is mentioned.
| Place | What the sources say | Rating | Reason |
|---|---|---|---|
| Villa with pools and large garden (Panza, Forio) | Hydromassage pool and mini pool, neither thermal nor heated according to the listing | 4,87/5 | Heating not confirmed |
| Hotel Terme Royal Palm | Four pools fed by hot springs (two indoor, two outdoor), but an overall rating just below the threshold. | 7,9/10 | Rating below 8/10 (Kayak, 796 reviews) |
| Central Park Hotel Terme | Two indoor pools, two hot tubs and an outdoor pool; some spa facilities were closed during guests' stays. | 7,9/10 | Rating below 8/10 (Kayak, 468 reviews) |
| Park Hotel Terme Mediterraneo | Two outdoor pools, one indoor pool and three hot tubs, with thermal water according to reviews. | 7,3/10 | Rating below 8/10 (Kayak, 156 reviews) |
| Hotel Terme Felix | Indoor and outdoor pools and well-liked thermal baths, but a low rating. | 6,6/10 | Rating below 8/10 (Kayak, 102 reviews) |
| Hotel Terme Saint Raphael | Rooftop pool and thermal pools; the review summary mentions water that is too hot in summer, and the pool is rated 6/10. | 7,4/10 | Rating below 8/10 (Kayak, 259 reviews) |
| Av Isola Verde Hotel Thermal Spa | Indoor pool and seasonal outdoor pool; mixed reviews on upkeep. | 6,9/10 | Rating below 8/10 (Kayak, 65 reviews) |
| Hotel Terme Stella Maris | Indoor pool and seasonal outdoor pool. | 7,5/10 | Rating below 8/10 (Kayak, 28 reviews) |
| Hotel Terme Rosaleo | Indoor pool and outdoor pool. | 7,6/10 | Rating below 8/10 (Kayak, 26 reviews) |
| Miramare Sea Resort & Spa (Sant'Angelo) | Nine pools advertised, but the listing also says the thermal pools are in a neighbouring complex; the pool is rated 3/10 and guests talk of misleading descriptions. | 8,7/10 | Negative reviews of the pools, conflicting information |
| Punta Molino Hotel Beach Resort & Spa | Two outdoor pools, neither advertised as heated or thermal; pool rated 6/10. Hotel closed from October to April. | 8,5/10 | Heating not confirmed |
| Hotel Albatros | One seasonal outdoor pool, no mention of heating. | 8,8/10 | Heating not confirmed |
| Hotel Ulisse | Two outdoor pools, no mention of heating or thermal water. | 9,1/10 | Heating not confirmed |
| Pagoda Lifestyle Hotel | One outdoor pool, no mention of heating. | 8,9/10 | Heating not confirmed |
