We had a great stay at Nikolay's place! He was very friendly and communication was very easy.
The apartment is very spacious, bright and had everything we needed for a 3 night stay in Vienna.
You could tell the apartment was newly renovated, the place was really clean and the bathroom was lovely (especially the waterfall shower).
The location was great, in a place called Ottakring with various grocery shops (Spar, Billa) in under a 5 minute walk. Also several restaurants and takeout places around. It was very easy to walk to the station and hop on the U3 to the centre (Stephanplatz). It took about 10/15 mins- the Austrian public transport was very efficient!
Slight warning- the neighbours were noisy and kept us up (and then woke us up) shouting but this is no reflection on Nikolay's place and did not really affect our stay.
We highly recommend this apartment and we would happily stay again!