It is a few place that offer air conditioner in Vienna. I stayed 3 different hotels, and it was the only one which has air conditioner. It also provides some cool stuffs; It rent bicycle if you pay some money, It also have table tennis, some games, place to chat in the lobby. However, there are no private refrigerator(you have to share it with others), no secure Wi-Fi(only public one). Also, kitchen was messy and there were a lot food that seems to be ancient in the shared refrigerator. It seems that visitor just left with out removing there food from the refrigerator and no one cares about it.