Hello Diana, In my opinion, the Vatican, Sistine Chapel and
St. Peter's will take up more than 6 1/2 hours. Rome does
have a metro and a very easy to use bus system. It would be
fairly easy to take the bus from the Vatican to the
Coliseum. My husband and I had no problem using the transit
system. We never took a cab once, however, we were not on a
time frame such as you will be, so it may just be worth the
money to take the cab. Keep in mind that there generally are
lines to get into the Coliseum as well. I dearly loved Rome,
we were there a week and I felt like we just scratched the
surface. Happy Travels, Lynne Gig Harbor, Wa
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