Elen was very organised, met us at the nearby hotel as arranged, and showed us all the necessary things such as internet. She allowed us to check in early (9am) and leave late (5pm) which was very convenient.
THere is a SPAR grocery store nearby, open till 8pm, and we could walk everywhere in the old city. Great location!
Apartment was exactly as expected, in an old Viennese building. 3 of us had plenty of room, and the 2 toilets are useful. One slight drawback was only one key, so we had to arrange who would get back first to let the others in.