Hi my family (3) used Minivan Service Roma from airport to hotel and cost 50 euro for all 3 return ,driver gave us a great mini tour through Rome on the way to hotel . vehicle was a brand new mercedes vito . they are situated just through arrivals in the waiting area . on our return we just got the hotel to ring them and they came to pick us up within 30 minutes . as for eating out i dont think you can beat the area around piazza cola di rienzo which is highly frequented by the locals ,we found one really good restaurant on via tacito called San marco . enjoy your time in Roma .
If you go through this thread you will find lots of recommendations for limos in Rome. Personally I always just jump on the train from the airport for €13 - direct and cheap. The train from Rome to the port is €9.