Hi Sue
You will have plenty of time off the coach. Here is the basic itinerary for the day (subject to change):
07:30 Depart hotel
10:00 Arrive in Rome - several hours' free time at St Peter's.
13:30 three-hour tour, driving to the Colosseum for a look around the exterior. Then you'll continue on foot to Trevi Fountain via the Forum & Piazza Venezia (about 45mins). If too hot there is a bus you can take to the Trevi Fountain, then a 20-30 min walk to Spanish Steps.
16:30 Return to your hotel.
19:15 Arrive at Hotel.
I hope this helps.
Kind regards,
Olly, your editor