We stayed here for 2 weeks and had a great time at Jack's and Jack is a superb and super responsive host. Would definitely recommend this place.
Flat
The apartment was newly renovated when we came and therefore everything was just neat and fresh. The windows do a superb job in blocking out the noise from outside and the A/C keeps the place nice and cool. The small kitchen has everything you need.
Location
The flat is in a super convenient location. But be warned (and prepare yourself), the flat is in the middle of Mongkok. We absolutely loved it. You step into life whenever you take a few steps out of the building. The MTR takes you everywhere in a few minutes and the variety of restaurants and shops in MK & Prince Edward is enough to last a few lifetimes.