DIY hot tub, old version 1.0 - bath temp (39 degrees) in 4 hours, just a wood fire inside pipe spiral. Hot water rises and draws in cooler water from below making thermal circulation. 1300 Litres volume.
Dyffryn House, Kidwelly - luxury holiday home sleeps up to 14, hot tub, parking for 6 cars, huge garden, 2 lounges, gorgeous location near Pembrey country Park, Millenium Coastal Path and located right opposite Kidwelly Castle. http://www.wheretoincarmarthenshire.co.uk/listings/holiday-cottages/holiday-cottage-sleeps-12.html#