The appartment is not big. I would estimate 20sqm including kitchen and bathroom. The street can be quite noisy but if you use earplugs it's fine. Be aware of the city tax, which is not included in the airbnb price. We didn't read the full desription of the appartment and were surprised by the additional costs. The appt. was very clean and compared to other locations not too expensive. If you are planning to stay only a few nights, this is completely sufficent.