I’m not sure how familiar everyone is with this, but you may be entitled to claim a reduction in rent from your landlord. Here is some more information about the why’s and how’s behind it.
You need to send a registered letter to your landlord by the end of the next cancellation period (e.g. the month stated in your contract when you can leave the apartment without finding a replacement tenant, usually March, June and September). For most people, myself included, this is June 30th.
The landlord has 30 days to reply. If they decline your request, they must state WHY and you can then challenge this if you choose.
Our rent reduction got accepted (to our amazement!) - over 900CHF saved on rent a year! so it’s worth asking and giving it a try. Hope that helps someone