We had a great stay at Alexander's apartment. It is very light and spacious, with a lovely courtyard garden too.
The neighbourhood is really nice and the flat is located really close to the metro station (which also goes straight to the airport, in about 30 mins).
Alexander was very communicative, and was very flexible about both our check-in and check-out, which was fantastic.
Only small thing to point out is that there is no coffee maker, so coffee drinkers could bring a cafetiere!