The flat looked as shown on the photos; it was clean and modern.
Communication with Frisan was quite rough in the beginning, nevertheless the check-in was fine; we met a friend of Frisan at the waterbus station who led us to the flat and who was very helpful.
I have to admit we didn't sleep very well on the couch, but as we stayed only for two nights, we could cope with it.
Moreover, the apartment gets a bit stuffy.
The location of the flat is awesome; you can walk easily to St Marcus Square and other sights.