Alessandra's flat is close to everything you want to see in Rome. We were able to walk to Trevi Fountain, the Colosseum, the Spanish Steps (literally blocks away) and even The Vatican (although it's a long one). If you don't want to walk, the metro is literally out the front door. Alessandra is an amazing host with stand out hospitality. The only note I have is bring ear plugs if you are a light sleeper as being close to everything means being close to traffic as well :)