The apartment is highly recommendable!
First of all, the location was very great. Only 10 minutes to the MTR station "Sheung Wan" and the ferry terminal (very convenient for those who wants to visit Macau). There were also taxis in the same street and they were pretty cheap. There are also 2 convenient stores and an ATM around the corner (1 min).
The flat was also very clean and it really looks like on the pictures. But it was a little bit hard to keep the bathroom dry because the shower is open. But there's no problem at all if you pay attention to it.
The hosts were very nice, although we never met them personally. They even changed our towels during our stay.
Thanks for the wonderful time in HK!