I have traveled a number of times in Western Europe and am thinking for the first time of heading further east.
I am a frugal traveler and am typically content with basic sightseeing, wandering towns on foot (for hours), street food, and the camaraderie of hostel lodging. I am fussy about one thing, however, and that is cleanliness: I cannot stand littered streets, unpleasant odors near where I want to eat, and serious smog.
Most recently I visited large and mid-size cities in Spain and France and was delighted at how clean they were, particularly in contrast to my experience with some of those same cities many years ago.
So my query: how would Eastern European cities compare in this regard? Thank you.