I understand what you are saying Elisa, and know that Motovun and Plitvice are quite difficult walking, (I struggled in Plitvice in the 1980's 🙂 ), but I do feel when it is mentioned on the forum that places like Calabria and Apulia have steep slopes,, lots of steps and uneven walking surfaces that they should be treated in the same way, and this should be mentioned both on the website and in the brochure. My apologies for highlighting those two trips, but I know a few people on here have mentioned in their reviews about the quite difficult walking at times.
I walk with the aid of a stick, (after 2 bad falls in the space of a year), am usually fine on flat surfaces and cobbles, but coming down steps is sometimes difficult for me. To use an example when I went on the Dubrovnik trip in May I knew it would be useless me going to Mostar ( although I wanted to very much), because of the slippery surface on the bridge. Things like this need to be on the website.
Whenever I see anything I fancy holiday wise on the website, I always do lots of research to see if I will be able to manage walking wise. It would help to have more information even if it is just a general pointer.