We didn't stay long, since we arrived late and had an early flight. However, Maria was easy to reach and gave us all the instructions for a late check-in. The house and room were very clean and pleasant. It was a hotel-like experience!
Maria's house is a 20-30 minute walk to the city centre, but an Uber or taxi gets you back home in 10 (for about 5 euros). The metro station is also close.