I stayed for a month in winter and would happily stay again.
The flat was very clean and orderly. Plenty of kitchen supplies were provided as well as a hoover and cleaning supplies. A large closet allows generous storage room, and I found there to be a good amount of counter space. I also appreciated the electric tea kettle.
The Wi-Fi worked well throughout my stay. There was no noise to speak of during the evenings and nights. The weather was grey for much of my stay, but even so the windows let in a good amount of light.
The flat is located near the main railway station. There is also a metro station just round the corner for the U1 Line, which can take one to the city centre in around 15 minutes. The neighbourhood is pleasant to walk around with nearby green spaces, and I was able to do all of my shopping within walking distance.
The check-in process was convenient and clearly-communicated. Lisa responded promptly to any questions and was consistently friendly and professional.