As stated always choose the doctor first not the hospital.
That said I stayed in Bumrungrad hospital for a couple of weeks.
I felt very well taken care of. The nurses where very attentive and when I called them they appeared immediately. Food was OK, had 3 different choices (western, Thai, Japanese) the Starbucks on the ground floor is a big plus.
Interesting was when I wanted something for pain or dizziness they called my doctor and confirmed that it was ok to give it to me. Even for things like paracetamol.
In my home country they nurses can provide simple medication independently.