I had read about this place on HappyCow and decided to stop in and check it out this week. Here's my Peace Cafe commentary, not really a review.
It's a historical building/landmark kind of place, located on Haight Street where there tend to be lots of street kids and wanderers hanging out on the sidewalk.
On the night I visited and was looking forward to get a light bite or a warm soup, I was told that the cafe had closed just before I got there... too bad. I did get to go inside and look at the menu and the wall art.
I felt a bit underwhelmed and even slightly disappointed. On the menu were dishes like eggs and cheese with bacon. The man at the front had told me that the Peace hotel/Red Victorian philosophy was about promoting peace. Well, serving bacon didn't sound like peace to me.
Also the space is a bit older and out-dated, definitely more like a coffee house than a cafe/restaurant -- could use a re-fresh or remodel.
On the positive side, there are some Veg items on the menu which are all marked. So that's good to know.