If I'm planning on spending about 3-4 days in Rome (possible day trip in the middle), what is the best method of transportation getting around the city? Are there Hop On/Hop Off buses that you can purchase a daily pass for? Are there any public buses/subways or cabs that would make more sense than a hop on hop off bus?
Would appreciate any insight and recommendations as I'm unsure of the best way to get around the city. I'm planning on visiting the major sites (Colosseum, Vatican, etc.) and might take some excursions over to areas such as the Jewish quarter.
Thanks again for any help!