Klaus is a nice host, he is flexible and the apartment is very very nice in a quiet neighborhood. What we loved in the apartment is that it had everything we could dream about (kitchen is fully equipped, microwave, mini-grill, power-shower, free WiFi, there is even a washing machine etc), but we had plenty of room as the furniture is rather minimalistic (nothing in the way). The apartment is newly renovated in a refurbished building from the late 30s(?). There is elevator in the building. The neighborhood is 100% residential, 0% touristic and seemed pretty middle-class for me. There are two-three playgrounds, two supermarkets, and some restaurants (the types where locals go) in the close proximity of the apartment, and the U3 metro is 5-10 minute walk away which takes you to the city in 10 minutes. Transportation from Westbahnhof and to the city was very convenient for us, no need to change. It is a great apartment even for a longer stay, as it has more than a tourist needs. In terms of value for money, I think it is a good choice if you prefer bigger apartment for closeness to the city.