You could try a long garden hose from a sink thats farther away.I have to use a bucket to take water out right now cause my AC is blocking the window I'd usually stick siphon out of, and I have to fill it up with the bucket because the pressure on my sink is messed up so can't regulate temp.
I was actually going to try to fix my sink, my uncle does construction and I was talking to him. Not sure how the hose would work as far as being connected to the sink, the only other sink would be downstairs in the kitchen don't think that'd work due to the fossetYou could try a long garden hose from a sink thats farther away.