I know several people who send their kids to David's Stars, a Spanish-language daycare in Adams-Morgan on Ontario, right by Columbia. They seem to like it, especially for infants. The advice I received was to go there in person, speak Spanish with Leticia, the owner, and then keep checking in regularly. They do have a weight list, but you can definitely move to the top by regularly checking in. There is also Jubilee Jumpstart nearby, which is supposed to be good, along with Rosemount. I would get on as many waitlists now as you can. Good luck!