We are experienced travellers with lots of free walking tours done and this is not what we expected. The tour did not contain everything that is listed in the advert and the lady told us that she was not covering it because "it was too hot". The tour included a visit to the bazaar, with almost none of explanations or useful tips to bargain or about prices, a few stops at underground stations and Uzbekistan hotel. All this could have been done by ourselves with information from the Internet. She was not engaging and with almost no interesting stories or anecdotes that usually make these kinds of tours apealling.
The positive thing is that her English is very good.