New York chowhound would like some guidance for a quick visit this weekend, first time visitor. As such I will be wandering around all the typical touristy areas, also around the Marina district a bit. Looking for good inexpensive places a single person would be comfortable in. I'm particularly partial to Southeast Asian cuisines, but Mexican, Indian & other fare is great. Obviously will be in Chinatown for one meal.
Time is really limited so I'm not willing to wander too far away from the sights.
Open to any other uniquely SF suggestions to check out as well, not only "ethnic".