i just deliveried my baby in this Union Hospital at the beginning of NOV, Nurses are all very nice and gentle, they tried their best to help you! the enviornment of this hospital is quite harmony and very clean.
for the mainland chinese there, i found that the portions is half and half! don't worry! the staff will arrange the room which only local people stay in, they won't mix with Mainland chinese!
however, one thing that is the door of each room, which is not soundproofing. its quite noisy! can hear the people talk outside!!