I would highly recommend Andrea’s place. We were referred here by a friend and it was absolutely amazing. It is just steps from the Colosseum and close to many restaurants, bars and shops.
Andrea was more than accommodating, he helped us on the first day by showing us a map of Rome and making recommendations of sites and local spots to check out. The apartment was extremely clean, well maintained and in a safe area. Andrea accommodated our timing for check in and check out. He also provided us with a storage locker for our bags as we were not leaving Rome until the evening on our last day. He was extremely helpful and a great host!