Rakswarin Hot Springs, à 2km du centre ville de Ranong, est un parc public gratuit et est assez fréquenté le WE. (Je l'ai trouvé pas mal du tout et agréable.)
Porn Rang Hot Springs, (ou Phon Rang Hot Springs) à 10km au sud de Ranong, semble beaucoup moins fréquenté. J'ai relevé quelques infos commentaires :
Bring your T-shirt, short pants, towel, sandal and toiletry. Shower before using the hot spring pool. Choose the pool which is suitable for yourself .The pools near the shower room and the creek are 40 degree Celsius. Two more pools up the hill which much cooler. Soak yourself in the warm water and listen to the sound of nature in the early morning is very FANTASTIC.
This place was simply amazing. We came during the month of june and the place was empty. We enjoyed most of the day the complete site with maybe 10 other people. My favourite was the hot hot pool (110F). It was hot at first but once in you could feel your bones getting all the heat. And once you were too hot you could either use the stairs to reach the cool stream or use the shower with store, water. I loved the stream option. Once you sat in the water of the stream you had little fish visitors who would come and eat away your dead skin. Further down from the hot pools(5 different pools all with different temps) there was a bigger swimming area. I love coming here. 100 baht entry.
https://www.tripadvisor.co.nz/ShowUserReviews-g317133-d7395183-r414808793-Porn_Rang_Hot_Springs-Ranong_Ranong_Province.html#Il est fort possible que plusieurs hotels aient aussi des bassins d'eau chaude (d'une des sources), bassins réservés à leur clientèle. Il peut s'agir d’hôtels près de l'une de ces sources ou d’hôtels de standing. Ainsi je crois bien me souvenir que le Tinidee Hotel (30 à 50€environ), pourtant en plein centre ville de Ranong, possède un bassin remplit avec de l'eau de la source chaude !! (je crois me souvenir que selon le personnel de l'hotel, ils la font venir par camion citerne... 😮 )
http://www.tinideeranong.com/facilities.html