We stayed at Elena's place for 4 nights. The best thing about this place is how close it is to the colloseum! As architects we just couldn't believe our eyes and were very happy with the location. There will be noise at night because lots of people are partying in this area. I quite liked the liveliness.
The house itself is Very pretty. The split level, though really romantic, did give us some trouble. The steps are steep so we never took our luggage upstairs. The height of the mezzanine is rather low so it's not advisable to be over 5'5" and drunk while up there. Don't let that hold you back. it's quaint and fun as well.
Elena was a nice host and gave us tips on how to navigate the city. The washroom was a bit of a let down but not too much of a bother. I recommend the place for a short stay.