I was with contact with Roman and he is super friendly, organized and helpful.
The apartment is pretty central I would say. 10 mins walk from Wien Mitte and 6 mins walk from another metro , 4 mins walk from a perfect korean restaurant called Das kimchi. I walk to most of the places I wanna visit most of the time.
I was living in room 4. When I open the door I thought I was in a boutique hotel !super clean, neat and cute !
I would highly recommend my friends to come and stay with them ! :)