Jan & Maida provide a super clean apartment and several suggestions for sightseeing. The studio apartment is extremely convenient to the Vienna Central Train station being less than one mile walking distance. Also within walking are several restaurants and attractions.
A few things I learned as an American I learned on my first Vienna visit: Be on time for check-in. Bring your own hair dryer. Bring your own instant coffee. Vienna is the safest and cleanest city in the world.