Nico's place is truly amazing. It's located less than 5 minutes walk from Hietzing station at the U4, which is a really go transport hub. Easy to get to town, naschmarket etc. The flat is just around the corner from Schönbrunn Palace. The zoo and there are plenty of restaurants around.
The flat itself is truly amazing. If you are travelling by yourself with partner or family. Besides its amazing charm, the flat is in one of the architecturally most beautiful buildings in Vienna. I can't recommend this flat any more. Go and try it...