Belltown resident for decades chiming in. It really is extremely walkable, including to Pioneer Square and Pike Place Market as well as locations the previous post mentioned.

Bell St. is a park (albeit paved for vehicles), and it finally received signage about local-only car access:

https://mcusercontent.com/b6749cc9930b55a313056721e/images/2...

That image is from the latest Belltown United newsletter - https://www.belltownunited.org/

I'm a proud Belltown Community Council supporter/participant.