By car: 10 minutes from Interlaken (exit Iseltwald)
By bus: Bus no. 103 runs hourly from Interlaken Ost to Iseltwald and back. The last bus from Interlaken Ost to Iseltwald leaves at 20.05 in the low season and at 21.04 in the high season. The ride takes about 20 minutes and costs CHF 6.00. After checking in at the hostel, you will receive a guest card, which includes free bus travel in the region.
By ferry: The ferry is a nice alternative for getting here. From Interlaken East, you can take the ferry to Iseltwald. The journey takes around 40 minutes and costs CHF 12.00.
By taxi: After 20.05 (in the high season 21.04), there is no public transport to Iseltwald. Consequently, you need to take a taxi from Interlaken Ost train station or call the "Bödeli Taxi" on 0800 22 00 88. The cost is around CHF 45.00 per trip.