Aug 2, 2017 - 9:13 PM
in reply to noribf
Your understanding is correct.
There is no "free" luggage forwarding service. There is a regular service which will be available for collection at Mürren on the second day after you lodge it at Geneva Station. There is also an express service which costs more for same day delivery but is irrelevant to you given your hiking plans.
Just take your bag to the luggage service counter at Geneva and they will help you.