I'm looking for Viator reviews.
I know TripAdvisor owns the company. I realize they are brokers and arrange tours and may not conduct the tours themselves. I booked 2 tours to smaller tourist sites in Ostia Antica and Herculaneum in Oct. The reason I booked Viator is that we were looking for small group, shared tours, and I could not find any company offering this option.
If you have any personal experience using Viator please share.