we had breakfast here and it was good food especially for the price! The food was your average (well, maybe a little better than avg. - but no fancy shmancy stuff), but the PRICES - WOW. I havent seen prices like that since I used to go get hangover breakfasts with my freinds in the sticks in Pennsylvania 10 years ago!
If you are anywhere near the area and you need to be fed with whatever money you've got in your pocket - you should be highly satisfied with Joao's.
Pros: CHEAP!, CHEAP!, CHEAP!
Cons: far from SF