I did the tour in my mobility scooter on the basis that the tour was accessible, as it was described. Unfortunately it wasn't accessible. At the first stop, the cathedral, we were asked to go inside, and walk down the steps inside!. Not a good start. The next stop was the necropolis, which was reached down a long cobbled street. My bones were well shaken by the end of the street. The tour then climbed to the top, with the commentary making clear that it was a difficult climb for able bodied people. We did not attempt it, but retraced our steps up the cobbled street. We moved on from the cathedral area, only to find on our route several examples of kerbs which were not “dropped”, and which I could not cross in my scooter. I was forced to cross these roads on foot - which was difficult, leaving my wife to manually pull my scooter across.
You are clearly not responsible for the lack of dropped kerbs , but you are responsible for describing the tour as accessible, which it clearly wasnt.
Finally, for the last 5 to 10 stops, we could not get any commentary.