In reply to alexcollins123:
It looks to me like Camping Ruetti is in Lauterbrunen.
A few years ago a group of us (6) stayed in Camping Gletscherdorf in Grindelwald. Although most of the site is filled with caravans there is plenty of space for groups in tents. I seem to remember there being decent shower block with washing machines and dryers, a ski room where you can dry kit and also another room with tables and chairs where you can cook and generally hang out if the weather's bad. It is about a five minute walk into the centre of town and probably 10-15 mins to the guides office and train station.
Hope this helps...
Phil
http://www.gletscherdorf.ch/ausgabe_e/index_e.html