Elly and George were very nice and welcoming. Apartment is big and spacious, yet very comfy and cosy. Everything was very clean. Hosts were so kind to leave some tea, coffee and home-made jams and some food, so even as I arrived late in the evening and all shops were, closed, I had a great breakfast.
Location is just perfect, very quiet, very close to downtown and Wien Mitte/landstrasse u-bahn. Very easy to get anywhere in Vienna.