In reply to genghis76:
Climbed a bit at Lehn and Neuhaus near Interlaken, worth a visit.
Gastlosen is also a great day out. 45-1 hr walk in but bolted sport and multi pitch routes in an amazing setting. You can climb on either side depending on the time of year, perhaps too shaded on one side and quite high up for April. Expect to have a humbing crag to yourself!
Worth trying to track this guide down
http://www.needlesports.com/Catalogue/Books-Maps-DVDs/Foreign-Climbing-Guid...
or extrem band 1 also by filidor.
Perhaps worth driving through into Ticino Italian Swiss, as the weather is much warmer, worth considering if the weather is bad on the Interlaken side of the Gottard tunnel.
Went to a crag called Ponte Brolla which is worth a couple of days.