Both Marta & her place are great!
The flat is by the Trevi fountain but inside a courtyard which makes it very quiet and peaceful, you wouldn't think you're in the center of the city. It's a great place to relax after a busy day around Rome, or if, like us, you are here for work, it's also a lovely place to stay all day. The wifi works great which is a must for us! We originally booked 4 days and extended our stay by a week. My favorite place in Rome so far and we rented a lot of different places here over the years. Highly recommend!