Thanks to the key safe the checkin was without problems. The apartment was as described and we enjoyed our stay there.
The price was okay, given the fact that it is in Prague and we booked pretty late and got separate rooms for sleeping by using the sofa bed.
Answers to questions via Airbnb were given quickly.
For the last day we could leave our luggage in the apartment longer than the official checkout time, which was really helpful for us.
I can recommend this apartment to others.