From Interlaken Ost you may buy a ticket that will cover the train, bus, and cable-car ride to Gimmelwald (Eurail pass holders score 25% off). Being a highly sought after adventure enthusiast destination, English is well understood at the train station. Take a number and state your destination. The train ride ends in Lauterbrunnen from where you exit to the road for the bus pickup. The bus travels in the direction to Stechelberg, but get off at the cable-car stop (Talstation Schilthornbahn). Take the cable-car up to Gimmelwald where the hostel is immediately on your left.