Positive: the location is perfect, you can get easily to the center even by walk. There is tram, bus and metro station nearby. The apartment is nice and well-equipped, beds are comfortable, soundproofing is very good.
Negative: the coffee machine was broken, spider webs all over the ceiling and carpet seemed dirty. We had issues with the check in: on the site it says you can check in from 5pm but the lady informed us she is working until 5pm so she can come around 6pm. We were waiting more than an hour for her, at the end we checked in around 18:45 which was disappointing after 10 hours of travelling.
Overall we enjoyed our stay.