6 weeks in Costa Rica

It was really fun. Lessons last for four hours with a break in between, after which there is an optional hour of either yoga, cooking classes, or dance classes. After that you're free to explore the city (and go into San José to look at the museums). I stayed with a host family, and it was super helpful. You get home cooked meals every day, a chance to practice your Spanish, and a local guide. Fair warning - the weather (at least during the wet season) switches from hot and humid to pouring rain. I'd recommend packing an umbrella and a ton of sunscreen.