Host matthias was very attentive and greeted us at the apartment.
Well located (District 3 of vienna so not totally central, but nice quiet neighbourhood). Can walk 25m into central vienna or there is a tram stop 2 minutes away and that will get you in about 20m.
Clean and large apartment, with bohemian style. Check in and check are very flexible (can leave your bag in the apartment)
Overall I think this is very good value for money (and for the flexibility)