I can only confirm what previous guests have written in their reviews: Sandra and Alessandro are great hosts, easy and quick in the communication, they provide helpful local tips on public transportation and places to go, equip you with the most important ingredients for breakfast and a lonely planet guide.
The mini apartment/old wash house is a true gem - you can feel all the love they have put in the renovation, plus lots of attention for details. I think this is the ideal accommodation for a short trip to Rome (especially for solo travelers) at a very fair price.