The flat is rather small but totally fine for two persons if you spend the day out and about.
We have stayed there with our little daughter and would have needed a bit more space. We could hardly open our suitcases. But again - this was because we had the crib that was especially provided for us - good service!
Communication and checkin were very professional. The kitchen is well equipped. The location is great to explore the city.
We recommend this place.