I live around the corner from one. I wouldn't necessarily want to be right next door because there are a ton of people hanging right outside early in the morning. But being just a tiny bit further away and out of view is fine.

Nope.

I live in a downtown dc neighborhood with several homeless shelters within a couple blocks. I would never purposefully move next to an overnight shelter. They are disastrous as they dump people on the streets all day. But the other shelters are good neighbors for the most part. I have happily lived there for over twenty years. I don't think that I would move to a single family home with a shelter on my block.