I had a fantastic time staying with Augustin, Gemma, and Pablo in Barcelona. The location seems perfect, right near two metro lines (easy to get to the train station and to La Sagrada Familia) and near a street with great food (tapas/pintxos). I speak a bit of practical Spanish, so we were able to have some conversations, but even if you don't speak Spanish I wouldn't worry about it since they are patient! :)