Close to Wien Mitte station (5min walk) where you can take either the S7 train from the airport or the CAT (city airport train, which is faster but more expensive). There are restaurants and a mall at the station. The place is huge, clean, stylish and has complete amenities - washing machine, dishwasher, fridge, heater, iron and ironing board! No aircon or fan, but it can get cold at night even in the summer. Only issue was the electricity was cut off on our last night until the next day before we checked-out. Ahha responded that same night but couldn’t work around the situation. The next morning she gave instructions as to how to manipulate the fuse board (may have tripped), but it was already too late since we needed to check out already. So we scrambled during the night without any electricity, and packed our bags only in the morning with the help of the morning sun! But overall, it would have been a wonderful stay (if not the best, in our Europe trip) without this issue :)