Nice stay in Vienna, our impression was good in general terms. You can leave the luggage after check out (they offer an open room without supervision for that purpose, and they don’t take the responsibility for your luggage). The apartment is very comfortable, modern and very well equipped, nice coffee machine, dishwasher, several coffee capsules, dishes, etc… On the other side some things could have been better: we could not use one big towel because it had some black stains on it, anyway we managed the situation without complaining, at night there is nobody at reception, but we’re sure they would have solved it quickly if we had told them, and we understand sometimes it’s hard to notice that kind of things.