My girlfriend and I had a good stay at the very-central apartment in Vienna. The area is quiet and nice, and within easy reach of all the main tourist things in the old town area. Everything is nice and clean, the bed is very soft and there is a useful coffee machine also. We didn't meet our hosts but they were very helpful in their prompt messages, so it all went really smoothy. This is a good place for a couple to stay in Vienna, for sure.