I can tell u the best one is Matilda at the Peak, 2nd is Canossa, third is HK Sanitorium養和.
Matilda is like a 5 star hotel with the best service, best food, best surroundings and best staff. But it's the most expensive and it's not very convenient.
Canossa is a really good hospital too, nice and quiet but same as Matilda, if you have friends and relatives that will come visit you especially your mom or 99 that always have to bring stuff for you, then it's not convenient.
HK Sanitorium養和 was the one I chose last time when I gave birth to my daughter. The nurses are nice there but yes if you stay that the big room it's quite noisy. I lived at the big room too but I actually like it because I can talk to other mama....not so boring lor!! Also after you gave birth you are already very tired so I can basically sleep anytime even when it's in the noisy afternoon hours. The noise didn't affect me at all. At least I think it's more convenient for me mom to visit me everyday lor !!