Interesting, I find it, while not beautiful, quite pleasant, and in fact enjoy walking or biking on such streets.

OTOH, while I heard that Paris is considered beautiful by some people, I didn't like it at all, and no longer visit there even if I happen to be going to other parts of France.

Similarly, I would never voluntarily spend a day in SF and several other famous US cities.

I guess the idea of "ugly" is quite subjective.