St Brides Spa Hotel
This contemporary spa hotel is all about the location. Set on a headland, overlooking Carmarthen Bay, its treatments also take inspiration from the surrounding territory, with marine-based products such as seaweed, mud and clay all part of the appeal. Another big attraction is a spectacular inside-outside pool, but it's closed for refurbishment until the end of January so best wait until then if you want to make the most of a visit.
Where St Brides Hill, Saundersfoot, Pembrokeshire, SA69 9NH (01834 812304; www.stbridesspahotel.com)
How much Spa breaks from £180 for two (sharing), including B&B and a 25-minute treatment.