BEST apartment ever!! I loved every part of it and this place made my stay in Vienna just perfect. Stayed here for 5 days/nights.
There is a 59A bus right at the corner of the nearest street (half a minute walk) that takes to Naschmarket and to the Opera, and comes every couple of minutes. Walking distance to the market is about 8 minutes and to the opera about 20 minutes. I found the location to be great.
The apartment itself is very clean and well kept, and is very welcoming. Andrei met me for check-in, was very polite and greeted me nicely, also was available and responsive for every question during my stay. Florian was in touch with me prior to my stay, explained everything to the very last detail and took care of every question/request to my satisfaction.
I highly recommend staying at this beautiful apartment. 4 floors of stairs are totally worth it :) Hope to visit again! Thank you for a wonderful stay!