I've been many times to Vienna but I can say my stay at Maria's was the best!
Perfect location - just several minutes away from Praterstern station (U1, U2, S7). Very close to the city center, Pratermesse/VIC and the Prater, of course. The apartment is ideal for a single or a couple or for anyone going to a conference, with all the necessary conveniences. The place is very cozy and clean.
And Maria is the best host you could ever wish for - the encyclopaedia for any questions you may have. She sent me a very explicit map of her place so that that I could easily find it. She gave suggestions for restaurants and places to visit. She just went out of her way to make me feel welcome and at home
Overall I had an excellent experience.
Thank you, Maria, for offering me not only your apartment but also your friendship :)