Weight loss boot camp

Not overly fussed where just near the beach. Also keen for kho samui. Looking for recommendations for an intensive ‘retreat’ with multiple workouts a day and a loose meal plan included. Similar to the Chinese ‘fat prison’ intensives. I want 3-4 weeks of focused training that’s not necessarily ‘optional’ to go to. With at least 2 workouts a day. I know there are a lot of retreats with optional classes and ones that are focused on yoga/sound healing etc but I’m not after that at all. Ideally my day would have at least two intensive workouts then one low intensity/pilates/mobility. Ideally at least breakfast and dinner included. No frills is okay, as long as there is a pool and beach nearby. I would prefer this style of retreat as I need to get my butt kicked and not have the option to just skip multiple classes (I have free will and I utilise that and can be lazy and just say ‘oh I’ll go tomorrow’.

Budget would be under 90k baht. Not new to fitness and have done intensive training like this but just after something where I can really focus for a few weeks and establish a good pattern. May be 2 of us or just myself (30F).