Tenant's right against landlord for broken elevator, WA state landlord tenant act

I'm in an old (1905) 5-storey apartment building with a testy elevator. It "breaks" pretty often, but it's usually fixed within a few days. It broke almost 3 weeks ago, and it is incredibly inconvenient. I live on the fifth floor, and I'm tired of having to walk up those stairs! There is a sign posted that says "the motor is broken, waiting for the part- due to the age of the elevator we aren't sure how long it will take..." or something to that effect. I know that there are people in the building that are less capable than me of walking up the stairs, not to mention the people who have been moving in. Do I have any recourse? I'm not sure what is taking so long, but this is pretty unacceptable. Any suggestions?