We were contacted on the morning of our arrival to say the apartment was not available as there was water damage. We were offered the apartment next door and, as we were on our way to the airport, decided to accept provisionally until we had seen it. When we arrived we decided to accept the replacement apartment. It had the same number of beds and although it was smaller it met our needs and was less hassle than to try and find new accommodation.
I can't comment on the original apartment but the other one Michael offered us was clean and furnished in a modern way. It was well equipped and had everything we needed. We were out all day sightseeing and only really slept there.
There was a balcony but this had lots of pigeons on it and was covered in their droppings. As it was snowing we did not go outside anyway.
The area and building are well located for a 15/20 min tram ride into the center and there is a Billa supermarket close by with some small local stores and a bakery. The area is not an expensive district but it felt safe and there were families around. The same with the building, although the door onto the street was removed and so the building was open to the public. But we never met anyone in the public areas of the building.
We had communication with Michael and one of his agents who contacted me via WhatsApp on the morning we were due to arrive otherwise all our communication was vis AirBnB. They were fast to answer any questions we had. Access to the apartment was via a lock box in the hallway and we left the key here on check out too.