A lovely flat! I wish we had stayed more.
We met Klaus during our stay there. He was an open, friendly and omniscient man. Before even our arrival he has trying to make our check-in easier by communicating and sending us useful info.
Great location. Cute neighborhood with a lot of mini coffee houses and little shops around. It took us only 15 min of walk to reach the center/ 5 min using the tram (1 min from the main entrance)
The only disadvantage was the cleanliness. Our room was pretty okay but the WC and the kitchen not really.
I give 5 stars because I can't give less to such place and hospitality.
The cons I just mentioned, is more a friendly suggested improvement.
We would love to visit Vienna and to stay in one of Klaus and Stavroula's rooms again.