When we arrived we got the key from the neighbour and soon noticed that there was no electricity at all. Hadn't been for some time, as the freezer had thawed and was beginning to smell. We checked the fuses and it seemed that the problem was outside the apartment. Otherwise the apartment was very nice and clean and we were able to immediately contact the hosts. Unfortunately they were unable to fix the problem during the day (we arrived on Friday morning, so a working day) and they were not in Vienna themselves and did not have a contact person to handle it. We had to find other accommodation and did receive a refund. I suppose it was bad luck, but the communication with first reaction of "No worries" and calling it "unlucky circumstances" and being most worried if I dealt with the cancellations on time to avoid trouble for them was not what I would have expected. It was such a hassle for us to have to find somewhere else to stay on a fully planned weekend and cost us a lot of time (and could have ended up being expensive, if we didn't put some effort into finding an alternative place to stay.) All in all - nice apartment, but this unexpected major problem was not handled well.