The apartment was great and deserves full 4 stars with a potential to be truly awesome!
I'll try to be as objectie as possible in this review:
Cons:
The biggest burner of the gas stove didn't work.
One of the electric sockets next to the bed didn't
People above 185 cm - get ready that you can be longer than a bed.
The door to the garden doesn't have any curtain and in the evening people inside the apartment can be seen.
The upper floor's ceiling is very low and suits mostly for children, but isn't it supposed to be the romantic loft? This reduces the value of the apartment drastically, when you can't use one third of it.
The building is quiet, but the door isn't soundproof, so even when people are standing and quietly chatting next to the elevator, you can hear them clearly. The second floor bed could be a nice alternative, but that damned ceiling! :)
Pros:
Communication wasn't a problem, check-in went smoth, place is very clean and stylish. And location, location, location! The area is swarming with historical sights and superb restaurants. So go for it!