The apartment itself is a pretty good place to stay for a few days (like we did), but I cannot imagine staying in this noisy district for a longer period of time - even closed windows won’t stop the noise, and with them closed it’s pretty hot there. The other thing is that the district itself is a very multicultural area.
Markus is a very good host though, he bought us a new hairdrier and chopping blocks as the old ones weren’t fine enough in his opinion and he let us in 4h before scheduled check-in time, but on the other hand the place wasn’t very clean, maybe because of this extraordinary arrival time, dunno. Also, my question about the posibility to at least leave our baggage in the morning (we landed at 8 in Vienna) and later check-in was met with a response that this is not a „hotel with a consierge service”, what is kinda rude in my opinion, simple no would be way better, but still, after all he did agree to let us in at 10, for what I’m very grateful.
Concluding, I would recommend this apartment, especially if You sleep as a rock, and mostly because of a very close localisation to U1 metro station.