Sylvester was a great host and make our stay very smooth. He advised us on best play to go and eat in the city and around the house as we had a limited amount of time.
Also, he was very responsive to our request, and provided us quick and efficient services. When he brought us one of my requests, he left us some sweets and chocolate which is definitely a nice touch.
Flat itself is super-convenient and nearby to the City center (Marienplatz in less than 8min!) with couple of cafés around for a nice breakfast.
The flat is as described and I would recommend it for groups.