I booked a charming looking apartment from Kaiser Welcome, but the day before my trip to Austria, I received a cryptic message from the host Andreas that he would "sort things out"...I was busy getting ready to travel, so just left for Austria. Meanwhile, I received a third party email from an apartment booking agency explaining that the original booking apt. had a broken pipe, so they were substituting another apartment. From the pictures it looked similar but not as nice, but we were in a bind because there was a pharma convention in Vienna and hotels were all booked. There were no pictures sent of the exterior, but because the pictures of the interior were similar, we accepted. The first problem was in the taxi when we discovered the house number, 60, was missing from the confirmation. It only had the post code, which I had thought was the complete address. I called Andreas and he told us the number and that he was waiting to meet us, but not "to be afraid when I saw the exterior of the building". The exterior of the building looked like a condemned building with gang graffiti on the outside door as well on all the buildings on the block. the stairway was filthy, with a very dirty sink in the hallway. The interior looked recently refurbished, or we would have walked out right then and there. But we would not have stayed if we had been send pictures of the exterior. Andreas was nice....he gave us a fruit basket as an apology...but the apartment we stayed in was nowhere near the quality of the one we booked. At the very least, it should have been discounted heavily. It was so awful we were afraid for your safety coming in and out of the building. We never would have stayed there. The bathroom was disappointing, with a tiny sink, and shower you had to turn to get into. The bathroom always smelled of urine too...there must be a leak in the toilet seal. We would leave the room as early as possible and only return at night because it so depressing. I don't know what to think...did the original booking actually have a plumbing issue...or was this bait and switch? Andreas could either be just trying to help in a bad situation....or conning us. Either way, we should have been told the terrible condition of the building and then given a choice. There were hotels available at the airport...I would have opted for that if I knew how terrible the apartment was. I also feel we did not get what we paid for....and we should be given at least a 50% refund. The apartment we booked was much cleaner and cheerful. I spent a lot of time researching for the best pick, and then felt cheated in the end. This was my first booking with AirBNB....I think I'm done with Air BNB.....it's hotels for me from now on.