You'll never see the owner of the apartment. You'll meet someone who doesn't speak english at all.
We wanted to extend our stay. When we asked for it they said it wouldn't be a problem. so we planed everything for one more night. Just in the evening before the next day they cancelled it and said it now it´s not available anymore. We had quite hustle with that.
Check out was 2pm. When we arrived at the apartment at 1:30pm the guy who cleans the apartment was already there and made pressure that he has to clean.
Very uncomfortable!
But the flat was nice.