Laura is very communicative and welcoming host. I have arrived around 10:20PM at her appartement, there was no issue with later check-in. I have sent her a message to which she responded right away. I appreciate is Laura. Apartment is 150m from metro Station - 2min walk, where stops line A, it let's you be in 20 minutes in Vatican.
I had room with my own bathroom. There were 2 other rooms in the apartment, but during my 5days stay I haven't seen anyone. I was able to use a kitchen (coffee machine, fridge), but I was taking breakfast in cafeteria. There are plenty of options where to eat in 150m proximy from the apartment,even those are open on Sunday :)
When you arrive by metro or bus from Termini (main train station) there is McDonald, few bars with pizza, burgers, few coffee shops, pharmacy, a supermarche, everything. It was very convenient to live there. I strongly recommend you stay at Laura's place.