Airbnb with amazing price-quality ratio rather close to the Colosseo, several bus lines which take you to Colosseo and Corso Vittorio Emanuele, Piramide (easy transfer towards Lido Centro and the sea!), and of course Metro A which takes you to all the major sights of Rome. The hosts are really kind and responsive, the personal check-in was a nice welcome. Well equipped apartment, even though there was no AC, the nights were really pleasant. All in all, a great homebase for experiencing all the historical, cultural, architectural and culinary blisses Rome has to offer. Just don't forget to throw that coin into Fontana di Trevi, so that you surely come back to the city ;)