Jan Gehl described in detail the criteria by which we can talk about the quality of a street. Is the place protected from cars, or do you have to constantly look around to avoid getting hit by a car? Security in terms of crime - are there many people on the street (after all, the more, the safer)? Is the lighting good? Is life active around this place? Protection from unpleasant weather conditions - is there somewhere to hide from the rain? Is it windy?