Harry was a really good host who got everything sorted for us with very short notice. We booked one night in one of his apartments and immediately wished we had booked two. We then moved to another one of Harry's apartments a short bike ride away.
We were a group of 7 (5 adults and 2 children) cycling along the Danube. There was plenty of space to store the 5 bikes and 2 trailers in both apartments.
There were several local shops to buy food for dinner.
We had a great time in both apartments and would recommend using Harry if you are staying in Vienna!