The best way to learn Spanish

During my three weeks at Tico Lingo (1 week group classes, 2 weeks both group + private classes) I have improved my Spanish significantly. Literally everything is taught in Spanish and also at my home stay family we would only speak Spanish, which I believe is the best way to efficiently learn/improve a new language. The staff are super kind and caring and make sure you feel at home. Heredia is not too interesting, but a safe city with some nice cafes/sightseeings and centrally located for weekend trips. I would definitely recommend Tico Lingo and sleeping at a Tico Family!