We were very pleased with our choice to go with Roma Experiences for our Underground Colosseum tour. We really appreciated the super clear instructions about where to meet the tour. Our guide (Nadia) was very friendly and informative, and did a great job keeping the group together in a crowded location. The combined Colosseum + Palantine Hill tour is a bit long, especially on a hot summer day, but it gets in all of the "must-see" placed! Would definitely do another tour through this company in the future.