I can really recommend Laura’s place! It was really convenient for me to walk there from the main station and you can also walk to the colosseum and many other places by foot. I felt really comfortable being in her room. Laura is extremely friendly and helpful and on my last day she allowed me to leave my language with her because my train departed in the evening and she lent me a big umbrella and rain coat because it was pouring rain.
Only thing about the room is that the windows are towards the staircase so there’s no direct sunlight, but it didn’t bother me because I left early every day and returned when it was dark already :)