I've stayed a month at Monika's. The room was very nice and clean. During weekdays the buses and subways ride very frequently so you can quickly get to the city. On weekends I recommend taking the bus to the "Ostbahnhof" and then taking the tram. I could keep my groceries in the fridge, use the microwave and even the washing machine at one point which was really great.
All in all I can only recommend Monika as a host.