I have found a few things on anibis.ch (look under mobilier - décoration) - good to be able to search by pictures to get a quick overview of what is there. Also got some decent dining chairs with wicker seats, in fine condition, for 10chf each from the saturday market on plainpalais in geneva. Loads of stalls there with lots of furniture and some quite reasonable prices.
WRS also has a lot of classifieds, tho quite a lot tends to be ikea. http://www.worldradio.ch/classifieds....php?a=5&b=221
Hope that that helps!