I found El Comedor without any problem, after taking a quick look at the historic Mesilla plaza, which I visited some years ago (it hadn't changed much). Unfortunately, I had hoped to have a look inside the church, but, alas, it was locked.
As I mentioned, El Comedor was reviewed pretty favorably by TripAdvisor. It certainly had the feel of a small, family place. The service was very quick, and the menu presented many tempting things. I wanted to sample several things, so I had to order the combination plate.
There was a Taco de Pastor, an enchilada de pollo, a chili rellano, a serving of chili verde, the expected beans and rice, and a big flour tortilla (I barely touched the salsa and home-made chips).
Everything was pretty good, and it was a challenge to finish it all (I rise to all challenges). The clear winner: the chili verde. It was spicy and very flavorful. I could have made a meal just with that.
There was also a beer. Total: about $15.
Now, I am back in my motel room for one more night, watching Rachel on MSNBC. Maybe I'll see if there's a movie on TV. The swimming pool is still open for another hour. So many choices.
Heading home tomorrow. No complaints.