Washington Square, San Francisco

This is a sort of fun park to work from, because it's right there in North Beach.  No big coffee places right there on the square, but you could always walk up to Caffè Trieste or something.  Plenty of people hanging out, and stuff to watch.  This all adds up to a super-noisy location, with people and traffic joining into a pretty good din.

Curiously, there's a public restroom right there in the park.  Not sure if that recommends it or indicates you should avoid it.  For what it's worth, no one was shooting up the last time I was there.

It has plenty of parrots.  It does not have a heart sculpture.  There is a church right next to it, so you have chimes to remind you of what time it is.