Our stay at Letizia's place was very pleasant, she is a very nice host too. The room is really beautiful and bright. Whole place is clean and stylish. Metro station (line A going to main spots llike Piazza di Spagna or Termini) is just 2 minutes walk from the place. Vatican city is 10 minutes walk. The minor drawback is that bathroom (although a private one just for us) was in the common hall. All in all definately place to recommend!