Communication of Christina is fast and appropriate, her apartment in a silent and pleasant courtyard.
But..., in my view this apartment is a studio, since (apart from the kitchen and bathroom) there is only one combined living/sleeping room.
As ground map it shows 2 identical pictures, one named living room and one named sleeping room. This suggests that there is a living room as well as a sleeping room.
Yes, if you study the pictures well enough, you will understand that there is only one room to sleep in. But the keyword 'sleeping room' means there is a separate room with beds, as does a ground plan with a picture of a living room and a sleeping room.
One of the reviews says:
The apartment was lovely (to small for 4 ppl, but totally my fault since I didn't realize it's just one room).
So I don't agree with the remark that it's the fault of the guest that the apartment turned out to be too small for 4 persons: it's the fault of the host whose advertisement caused wrong expectations.
Other reviews also speak of limited space for 4 persons, so I suggested Christina to rename her apartment in studio and put a less confusing ground plan.