Aug 12, 2012 - 9:31 AM
I suppose you clicked to the Interlaken page
from that hotel page as well? That page lists how to get to rail station Interlaken Ost from each hotel, and also that it is the (main) starting point to get to the Jungfraujoch.
Grindelwald is on the way from Interlaken to the Jungfraujoch, and so are Wilderswil, Lauterbrunnen, Wengen, and a bunch of smaller towns. If you prefer a central and more lively location, pick Interlaken. There are hotels with mountain view rooms as well. If you prefer to be close to nature and start hiking directly from your hotel, pick one of the other towns.