This place is spacious, exactly as described and overall great value for money. We stayed with 2 kids and our stay was comfortable. Public transport is within a few minutes walking distance which takes you to the U3 (underground line) or you can use the bus which is just around the corner to get to the centre. If you dont have massive amounts of luggage, you can also use U3 to connect to CAT service (to and from airport) which will save money on taxis. Overall location is fantastic. There is a fully equipped kitchen and grocery store SPAR is very near if you are planning to spend a few days here otherwise there are plenty of eateries on Neubaugasse. Check in was very easy with key in the lockbox.
Only comment is that there is no lift access and we had to carry the stroller upstairs to level 2 which was not a big concern for us but might be worth noting for people with mobility issues.