Lingoo.com

Lingoo is an online community that provides four great ways to enjoy a language holiday. 
 - You can arrange a language exchange in which you offer hospitality to another Lingoo member who invites you to his or her home in ‘exchange’. 
 - You can arrange a stay in the home of a qualified teacher for an agreed period for structured language lessons.
 - You can choose to stay with a host family; this is an arrangement where you live and eat together for an authentic language and cultural homestay. 
 - You can even invite a Conversation Au Pair into your home to provide the whole family with language tuition in an informal way that fits into your family life.