Rome is a crazy city with millions of people going all the time. Be careful of thieves and be ready for horrible service at restaurants. The exception to that is if you are a pretty women, they will treat you well. The people usually have bad attitudes, it is very expensive, the traffic is horrible. Although, all in all it is worth seeing just for the sights. Don’t bother renting a car. Trust me, you will not want to because of traffic. Go there see the sights you want to see and then leave as soon as you can.