Where to play guitar and sing?

Hi all, I like to play guitar and sing outside. I often do by the water on the back cove trail but I don’t want to do so too frequently in the same spot and become a bother to people. I really don’t mind if people hear or listen, I just need places where people won’t act like I’m the scum of the earth for looking a little scruffy and playing guitar. So anyways, any other nice spots to play sit and watch life go by?