I thought this was such a helpful and interesting tour. I never thought you could send 2-2.5 hours in little Ljubljana but we did and it was very interesting. Our guide knew so much and was fun and helpful if we had questions. Over 50 people showed up for our tour on a weekend so she had to call for a second tour guide to come split our group up so that helped, but it was still larger than I would have liked. I am sure a non weekend tour would be smaller. The deserve a generous tip since it is free.