We have stayed at Franzi’s apartment for a short weekend break.
Communication was really good and his partner Rabi answered all of our questions and also met us next day in the morning.
The apartment is very small and unfortunately when we arrived the were stained and used towels left for us making impossible to have shower upon our late night arrival however issue has been resolved next day first thing in the morning.
The place lack some hangers in the bathroom and any space to put your clothes away. Also charge of 50€ cent per coffee capsule was rather surprising.
On the bright side location is ideal - right next to 3 supermarkets and all attractions in Vienna and host are very kind and helpful.