We have already participated in several European Freetours from which we have learnt a lot in terms of history, architecture, culture, people etc., not to mention the many useful tips and tricks from the guides.
This tour was our first negative experience.
The guide spent more like half the time doing a question and answer quiz that taught us nothing because we read this info in a travel guide. Moreover, she had done no art history studies or other related required basis to guide, which translated into her short stories that were of little interest and even inaccurate. Also disturbing was that she spoke Spanish, her native language, to Spanish-speaking group members which is not polite to the other guests and because the tour should be in English.
Too bad, we could have used our time much more usefully.