If you are looking for anything second hand and lets face it sales of secondhand goods mostly go on undercover in Catalonia/Spain, Then try the site below. If you go to the home page it shows the whole of Spain split into regions. You never know you may find that stylish piece of Spanish furniture you always dreamed of.  ;D ;D ;D ;D ;D

http://www.segundamano.es/anuncios-tarragona/