Do yourself a favor and stay at Ekaterina's place inTrastevere - what a wonderful, friendly and convenient location. We stayed in Rome a 2nd time during our trip and how I wish I had re-booked her apartment. The space was large with 2 full bedrooms, a large bathroom, sunny, sunny spaces with large windows. Down the street in 2 minutes are many little bistros - a real joy to stay here. There are stairs -- but you will find virtually no apartment without them, so be prepared ! :)