Stay for a night as weekend break from Bangkok
Avatar is in the middle of nowhere, about 4 hrs drive from Bangkok. The place is very peaceful in the quite small town Ban Rai district, Uthai Thani province. Room is like staying in a cave, but comfortable. Ourdoor bath is not too bad. Dinner is ok, but breakfast in room is limited.
The pool is like swimming in the middle of mountain, but lack of maintanance and not so clean water. I would recommend the spa. It is not luxury, but the therapist is well-trained. You also can ride a vintage bicycle around the properties and nearby village.