When my sister Lindsay visited in March, we happened upon Taqueria Poblano in Del Ray. Just last week we needed a mid-day family outing, and remembered how much we had loved it.
Both times we've gone, Sam and I have just ordered a couple tacos each, so I can't speak for the rest of the menu, but the tacos arrive simply-- no frills. And the frills wouldn't be necessary; the tacos speak for themselves. Sam has tried the pork adobo, mahi baja, carnitas, and some of the specials. I've gotten the crispy "L.A. Style" veggie tacos and a crispy crab special, but the best is certainly the shrimp taco. Among all the tacos we have tried, we've yet to find a way you can go wrong.
Taqueria Poblano is across the street from Dairy Godmother, so you know you're all set.