43 years old
German in Exchange for a room (min. stay: a week)
native german offers intensive German o English conversation or German classes for beginners
in exchange for a room in or around Barcelona (2- 3h / day)

wide variety of topics possible, 
includes correcting your mistakes

more info on exchange: http://gocambio.com/profile/1222/
more info on wednesday beginner classes in German: http://ccivics.bcn.cat/fontdelaguatlla/pagina/1972

video doc about the offer: http://blog.xarxaeco.org/monedas-sociales/yours-mine-ours-the-exchange-economy/

text in catalan: http://cooperativa.cat/un-experiment-dintercanvi-per-habitatge-stefan-blasel/

my couchsurfing profile: https://www.couchsurfing.com/people/stebla

i can send you a list of people (only names) where i stayed and what i taught them since july 2014