You will always have to make at least one connection to get to the old part of Vienna if using the metro. Not a big deal but just something to know. This location is near an S-Bahn or the train service which is different from the U-Bahn or the metro which goes to the most touristy parts of the city.
Wifi is pretty poor. Cuts out every few minutes and I wasn't able to even stream a song from spotify. You can surf well enough when it's not cutting out but any video or anything like that just don't bother.
Hot water also ran out one time, but was back within a few hours.
Clean place decent location you can get to the whole city from it via the metro. I would recommend it.