Atta is part of a complex of 3 resorts. The grounds are well landscaped, with great views over a lake to the mountains of Khao Yai, resort design is attractive and well laid out. Our 1-bedroom suite was on the fourth floor of Block 7, and was very nice indeed -- well equipped, comfortable, great bathroom, and big balcony with a terrific view. Breakfast was a massive (and excellent) buffet (but incredibly crowded with local tourists -- the hotel was packed!). Staff were polite and welcoming. All good.
What put me off a bit was the lack of info about the whole resort. Nothing in our room with details of the restaurants, the spa, or a map of the whole complex to guide you around, or info about the area and what to visit etc.. The couple of times I checked in reception, the information/concierge desks had no-one there and the check-in staff were busy. The Japanese restaurant was fully booked when I asked via customer service for a table, the Thai restaurant was okay but overpriced for what it was, and the room service menu wasn't great. It's a very big complex, and I just regretted the lack of info. I got a map in the end -- but a rather pathetic photocopy of a photocopy that only covered the Atta part of the resort area.
I'd probably stay here again (we were here for 3 nights in total), but would really appreciate more easily accessible info about the whole setup.