The description sounds lovely--stroll the lanes and alleys of Prague (and whatever other city you want to insert here) and it sounds, romantic, like strolling back in time.
Actually, the large cobblestones for the street are spaced so awkwardly it is very difficult to walk on them. The smaller cobblestones for other streets and maybe some sidewalks are so small you can get even the widest and thickest footwear caught in them.
I found walking very challenging.