We had two short chat chances with Monica and her friend Liliana and loved these international women! They're lovely, energetic, intelligent and kind, and for alone travellers, safe.
Everything was quite perfect for me and my husband! So i'll just say something about details, for giving some opinion.
Flat is at the 3th floor, but because of the entrance stairs, it's actually 5th. If you'll arrive by metro, use L1 line, the Arc of Triumpf is so close. Be sure you'll walk tooooo much in this city, which we loved about, and you can reach from this point to where ever you want. If you planned to discover all part of the city like us, you'll use this flat just for take a shower and good night sleep (2 nights we stayed), which you can satisfy for both. We didn't have a time for using the kitchen but she's prepared and offers for all things that you'll need.
At the end of this exchange, you can gain beautiful memories and international friendship. Thank you!