How to notify tenants elevator down for 6 weeks?

[Evan K.]

We have an apartment building with one elevator that's going to be down for 6 weeks early next year for modernization. Some people will not have any problem with this but there are others that may be elderly or have mobility issues where this could cause concern.

We want to tell tenants as soon as possible so they can make plans, if needed. What's the correct way to inform existing and new tenants about this work and inconvenience?

Lastly, just to be good landlords, we're planning on something like a small rent reduction for this time period as an apology.