I've been looking too around the same area...trying to find a lock-up or DIY garage/pit which you can rent to do your own maintenance work on your car/bike. No joy yet.
In many (most?) countries working on mechanical things (assembly, disassembly and manufacture) is seen as a positive thing; either as a hobby and/or intellectual pastime, which you can do on your drive or garage space. For many governments at the moment it's a key skill that is being taught again via schools, university and apprentice schemes to help stimulate economic growth. Academic folk can, and should, work with their hands and manufacture is a key component of that.
I've just changed the gearbox in my caterham downstairs in the underground car park of our flats (and have serviced my Aprilia too on a previous occasion). Most folk passing in and out were intrigued and enjoyed watching/helping/asking questions. Only one gave me 'the stare'. Swiss 'laws' are not all mandatory and many are indeed a little bizarre BUT be clean, keep things tidy and shoot the breeze with those passing and it's all a joy. I won't, for example, be down there tomorrow on a Sunday or mowing the lawn heaven forbid (but I will be driving out and about).
I don't slide down snow covered hills on small planks or eat melted cheese on bits of bread from a pot. But, job aside, one of the main reasons for seizing an opportunity to come to Switzerland was to drive the roads and enjoy wonderful scenery. And tinker with my toys. I had no idea that the last part would be such an issue
In a land that produces and sells so many wonderfully intricate and well engineered products around the globe (weaponry mechanisms and actuation devices, horological pieces, Toblerone...) I do wonder where/how the Suisse get their engineering and design expertise pre university. Apprenticeship training aside it does not seem to happen in school and it seems that mechanical tinkering is not allowed/frowned upon at home in many cantons. It's a real eye opener but probably why most 'Joe Public' don't do it (and why many garages charge exorbitant prices for basic vehicle servicing work as they know that many are not capable, or not allowed, to do it themselves
Horses for courses and all that. Apologies for a bit of a thread hijack. I hope you get your bike sorted.