Pros
Biggest plus is the people who work at the library are overall really nice folks. The library is also a beautiful environment to work in, a gorgeous space with an open feeling. Also a good rate of pay for part time.
Cons
Not exactly a con, but, this can be difficult at times... You must be ready to interact regularly with homeless folks and some people with mental challenges. Despite the issues that can come with this, i feel it is important that there is a warm dry place for them to go. But it can be occasionally unpleasant. There is good security though, in case of any issues.