Matched by need
Past about six weeks the calculation changes completely. On-site camp accommodation stops being good value, the town you are in matters as much as the camp, and visa logistics become a real constraint on where you can be.
Do not prepay months at a camp you have not trained at. Buy a week, then extend. No camp refuses the second payment.
7 camps
Rawai, Phuket / Mid-size camp
A long-running Rawai camp that stayed Muay Thai only while neighbours diversified into MMA. Reputation is built on Thai trainer quality and pad work rather than facilities. Suits people who want to actually get better at Muay Thai rather than sample several martial arts.
Rawai, Phuket / Mid-size camp
One of the older established camps in the Rawai cluster, with a mixed crowd of holiday trainees and longer-stay fighters. On-site accommodation and a walkable location put it in the practical middle of the Phuket options.
Thalang, Phuket / Small camp
Smaller camp in the quieter north of Phuket, away from the Rawai and Chalong concentration. Being out of the tourist strip is the point: fewer distractions, smaller groups, more trainer attention. Less convenient if you want nightlife or a big social scene.
Sri Thanu, Koh Phangan / Small camp
Koh Phangan camp with a strong long-stay and wellness crossover crowd. Relaxed pace and a small group size. Progress depends heavily on who else happens to be on the island that month, which cuts both ways.
San Kamphaeng, Chiang Mai / Mid-size camp
Set outside Chiang Mai city in San Kamphaeng, which makes it a training-first stay rather than a city one. Long-standing reputation with foreign trainees who want structure without the scale of the Phuket complexes.
Bangkok / Mid-size camp
Bangkok gym that manages to be well set up for visiting foreigners while keeping a serious Thai training culture. One of the more approachable ways into the Bangkok scene if the rural camps feel like too much.
Bangkok / Mid-size camp
Multi-discipline Bangkok club covering Muay Thai, MMA and BJJ under one roof. The practical pick if you are in Bangkok for work or a long stay and want a gym rather than a camp experience.