We didn't meet Maia, but we could enter the Appartment easily.
The appartment is very small, as discribed. There is hardly any room for more than two suitcases. The flight of winding stairs are very small and a suitcase normal size and weight is hard to get up in the 5th floor. I would take backpacks or small and light suitcases not to have such a hard work of getting the luggage up and down.
The toilette on the hall was always clean.
The appartment is situated perfectly. And it's quite easy to get from the airport to the appartment.