The apartment itself is centrally located near to the main attractions and metro. It is also well furnished and has relatively easy access to everything you might need.
Do note that the lift in the building is old and very very small - maybe 2 people maximum. The apartment is located on the 3rd floor so you might have to make multiple trips with your suitcases or take the stairs. The biggest drawback for us (which other guests have also noted)was the poor wifi connection. It was weak and unstable throughout our stay, and we ended up having to rely on our mobile network which was also not very good unfortunately.
Apart from that, Maria was very kind and saw to our needs despite our late check-in and check-out. They are quite busy at times and may miss messages sent via the app, but will respond quite promptly to calls or text messages.