My first visit to Cafe Mundo was in September 2004. It was wonderful, a solid 8.5 on a scale of 1 (inedible) - 10 (culinary Nirvana)
I visited Cafe Mundo again last September. Service quality was not as good as the previous year, but the food still rated a solid 8.5 on my scale.
This is by no means a 5 star restaurant, put it at a 3 star by U.S. standards, a 4 star by San Jose standards...maybe.
Their pizzas kick ass; different from the U.S., but really excellent. The ham & mushroom pizza blew my mind.
If the weather is nice, ask to be seated on the large patio at the rear of the restaurant.
A word of warning: If you have difficulty climbing stairs, this might not be the dining spot for you. The restaurant is located at the crest of a fairly high hill (isn't it located in Barrio Escalante?). I don't know if the restaurant is accessible via the gate at the rear of the property, although we did notice employees coming and going by this route, so it may be possible.
Cafe Mundo has a fairly good wine list for C.R., but it is pricey. Desfrute.