We had a great time staying at the Grand Flora this past summer. There are a few posts in the Marriott forum that give advice on good places to eat, etc. We found that the supermarket on the way to the subway directly across from the hotel was a great place to get drinks and snacks to carry around. We didn't do any tours around the city except for guided tours or audio guides at most of the sites. We found those all worthwhile. One note at the Colosseum there are non-official 'tours' offered outside. It is cheaper to just go straight in to the left and get the official tour. Feel free to PM with any specific questions as there is too much to say about Rome and check out the forums here and the assorted web sources like Fodors and Tripadvisor.