Ok. Not too bad. The apartment was a bit dirty, however the host responded promptly and promised to fix it, offered us a discount for the next stay.
The heating system is a bit noisy so take that into account if you are sensitive to noise while sleeping. Also, for me, the bed was too soft and it was hard to sleep. If I knew that, I would rather pay additional 10-20 EUR and stay at the hotel next time because of the dirt and the mattress. Ok value for its money in terms of location.