Thin walls. Can hear neighbours to the right, left, sides, front all hours of the day including doing karoke, talking in room AND even after being asked by room service to lower their volume (twice). Thei gym doesn't have air-con, is next to smoking area, and smells so much I was starting to vomit and couldn't use it. It is 3-star. Breakfast which I paid for is very basic - rice, egg, fried fish and one other meat EVERYDAY.