This was my first experience with Salvadoran food, and it's been solid the four or five times I've stopped in.
The building itself isn't very scenic- it's a windowless bar-type structure, and is a bit dark inside. It's clean otherwise, but don't expect a Gordon Ramsay restaurant or something.
The menu makes sense. The pupusas are the centerpiece, but they've also got some El Sal/Mexican dishes that are pretty solid. Honestly, I've mostly just stuck to the pupusas, including the gigantic, coma-inducing Pupusa Loca. They've also apparently started serving breakfast, which is a shock to me since I've never seen them open before noon and I'm just a couple minutes down the road. On one occasion about a year ago, I ended up calling them to see if they were open while I was in the parking lot. It was a little awkward, but not the worst experience.
Prices are fair, portions are generous, quality is high, and service is, by and large, attentive. Definitely worth a look!