The one hour tour group was too large. The guide did not seem to be concerned with the size of group and moved about without any marker. He only devoted 5 minutes to the Cathedral part. He dismissed us and asked for headphones back in one of the most crowded spots of Cathedral- the Choir. We were very disappointed.
Our guide did a fantastic job. She was informative and very knowledgeable. We were there on an incredibly crowded day, and our guide was able to cope effectively with the vast number of people and other tour groups milling around. She was able to keep our group together, and move us around the Mosque for an excellent tour. Highly recommended.