I am actually confused how to rate this hotel. Let me divide my opinion in two: what I think about the hotel and my experience when I was there.
1. The hotel. I really like it, I usually stay in Grand Hyatt Jakarta and this is the first time in Singapore and it is such an elegant hotel. The spa looked great, the swimming pool is a bit small but it is nice. The breakfast buffet was good, comfortable room, check in was smooth and overall a very nice hotel.
2. My experience. I book the hotel through my travel agent who didn't mention that the hotel was having a major renovation. We were on the 13th floor on the terrace wing and as soon as we arrived at the hotel, the reception warned us about the noise from the renovation work on the 11th and 12th floor. 9am-6pm daily except Sunday 11am-6pm.
The noise is very noisy.
I guess it is fine for the people who plan to be out the whole day, but since the hotel and the room are quite nice, we wanted to enjoy the hotel. Of course we couldn't.
So, I guess people should really realised about the renovation noise before they book this hotel. I really like this hotel, I will stay here again after they are done with the renovation.