We stayed in A one for six nights and overall we had a good time except from one night that we found our room smelling like someone was smoking! After some investigation we found out that the in the next room were some Chinese tourists that smoking in a non smoking room...the problem is that most of the standard rooms are all connected to each other by a locked door and that let the smoke easily come inside...also can be a security issue.
What we liked about that incident is that the hotel immediately transferred us to another room, fined the "smoker" and handled the situation with professionalism and support. Rooms are clean and the interior looks like you are in cruise ship. We didn't try the restaurant because it was always full with tour groups that actually they weren't staying in this hotel but coming from others, but in pattaya there're so many other places to eat like for example the central festival mall, so not a big problem!
The beach is just 20m across the street but we didn't swim there because we saw that it's not so clean for a kid, so we preferred the short trip to the island of koh lan that it's very beautiful with clean beaches and relaxing sun beds and umbrellas!
Staff are smiling and kind especially the evening man in the lift! But the waiters in the pool side can't speak English at all.