We found this place through the Yelp. 2 Mexican ladies from Oaxaca cook for guests in their own home kitchen. It's open on weekends from 7 am to 7 pm. When you arrive there you have to call (202) 265-0243 and they'll welcome you. This place is very popular among locals. The food is delicious. I highly recommend the goat stew soup ($12). The goat meat is cooked for several hours and the broth is very rich. The tacos ($3) are also delicious. They have several types of sauce to put on top. The guacamole one was terrific, very fresh and full of flavor. Cash only.