Positives:
The location was great for sightseeing, many public transport options nearby.
There were also many grocery shops and restaurants nearby.
The beds were comfortable and the kitchen was well equipt.
The apartment is located on a quiet street and there is not much noise from the outside during the night.
Negatives:
It is a bit small for four adults.
The living room floor was dirty when we arrived, so we had to wipe it up before we were able to walk around.
The apartment is quite dark, as the windows are small.
The bathroom is also rather small and the toilet is located in a small separate room in the living room/kitchen.
The neighbours in the appartment next door were loud during the night.
The entire entrance/hallway/stairway into the apartment is rather narrow, so it was a bit of a struggle to carry a large suitcase into the apartment.
Overall it is a good apartment for sightseeing, but a bit small for spending a lot of time indoors.