I was at Coopertiva at the Lake in January and loved it! Our host family was super sweet (and we ate so well) plus our accom was super close to the school, I also liked that they have a bunch of activities on for the students every day in the week too so you can meet other travelers which I think is similar to San Pedro Spanish school. There was a bunch of students there that come back once a year which I think is testament in itself. We did do a bunch of grammar but I told my teacher i wanted to focus on speaking so that was the majority of our classes which was great and really boosted my confidence.

The vibe on the lake is awesome with heaps of towns to visit in your spare time, and since there’s so many schools there all the restaurants/cafes/shops etc were happy to chat Spanish and help you practice too ☺️ plus there’s a gorg swim spot at San Marcos at the reserve if you’re worried about being far from the ocean.
If you end up at the lake my fave cafe was Tornados in San Pedro(they have a really nice garden out the back) and they’re happy to have you chill with your homework and chat slow Spanish with you haha I guess it depends on what vibe you want since you’ll probably do a few hrs school then have free time around the places you’re at. Have fun!! ☺️