Amazing incredible location so central in Vienna city yet isn't loud at all (which is impressive for how central it is). The apartment is a great size, very clean & equipped with everything that you'd need! The balcony is connected to other people's balcony areas which cannot be seen in the image so doesn't have the greatest of privacy as people were smoking & chatting outside next to you and could look into the flat easily but other than that it was great.
We had a slight hiccup with check-in as we specifically picked a lock-box self check-in option as we knew our flight was very late & didn't want to feel restricted. It was only on the day of check-in after I messaged asking for the lock box code that we heard it wasn't working and that we'd have to call once outside the flat door to be let in via an app on the owner's phone. We did become quite stressed as our flight became very delayed and in the end we arrived at the flat at 3am and simply had to cross our fingers that the owner (abroad at the time) would have signal & wake up to the call in order to let us in. We were a bit stressed but it all worked out in the end and owner kindly answered the call & buzzed the flat open.
Overall the flat is so nice, clean, has everything you could want & the location really was amazing.