We stayed at the Bay for 3 nights before the full moon party. First impressions were good: the rooms are colorful, the location is good, the food was great, and the staff were welcoming.
However, shortly after settling into our room I was moving pillows around on our bed and noticed a line of dead bugs underneath one. The staff kindly reassured us that they were from a recent pesticide treatment and moved us into a new room.
If this was our only hiccup, we would have happily moved on and left the resort a 4 star review. However, the next night when we got back from dinner around 10:30 the whole resort was without power and I spent 15 minutes looking around the main lounge for a circuit breaker since there was no staff nor contact info for management to be found.
The next night was the full moon party and the staff offered to schedule us a taxi for 9:30pm. However there seemed to have been poor communication between staff; at 9:45 we asked them where our taxi was and they said there was no record of us requesting/accepting the offer for a ride from earlier that same day.
Finally, as we were checking out they tried to charge us for a couple cans of soda that had broken/exploded in the minibar (ones we didn't drink or even touch during our stay).
All in all I would consider this resort if you value privacy and want a good location and quiet ambiance. However as far as service is concerned, you can get proper treatment elsewhere on Ko Pha Ngan for the same price.