The flat itself is very nice and has all you need (besides WLAN, which is only availablie in the staircase).
The neighborhood is a weird mixture between (on the one hand) low-income-residents/alcoholics on the streets and (on the other hand) cozy/stylish bars and restaurants right opposite of the flat. During our stay of five days, there were three occasions where the police came and (friendly) escorted some drunks away from the square in front of the house and from the playground next to the house. So it is a 'watched'/safe area, but a bit 'dodgy'...
There is an absolutely authentic chinese restaurant ("Happy Buddha") around the corner, a very typical Austrian Restaurant ("Mozart's"), a very stylish/hipster Bar/Restaurant ("Dingelstedt") and up on Mariahilfer Straße the highly recommended "Mariahilfer Bräu" where they sell exquisite self made lemonade.