I booked this as a 'Free walking Tour' (gratuities apply) online before arrival. Not only did it advertise small groups but already had a very good rating. On the day of the tour it was pretty miserable and as we arrived at the meeting point we were greeted by our tour guide Rafael who gave us a warm welcome and told us the rest of the planned group had cancelled and it was just us. We proceeded to have a really interesting, informative walk around key areas we would not have otherwise visited and got to learn so much in a short time, with Rafael answering any questions we directed at him, he really knows his stuff !! I would not hesitate in recommending any one of Rafaels tours