You’re kinda right, sorry, I didn’t read your first post thoroughly. However, I’m still also right 🙂
It’s a little more complex than that. Art. 1952 through 1954 describe the responsibility of hotelliers. Art 1953 covers objects left with the hotellier, art. 1954 explicitly considers vehicle contents to 50x nightly rate.
The Cour de cassation considers that the dispositions in Art. 1953 also apply to vehicles left with the hotellier as per all other objects left with the hotellier as per 1953 (Jurisprudence : Cour de cassation, 1er chambre civile, 22 février 2000, Dalloz 2000 IR 83). A bike is a vehicle (the mentioned Cour de cassation case is actually a boat stolen from a hotel car park). That’s 100 x nightly rate, or uncapped if the hotellier was negligent.