The Washington Park ramp is decent, but ...

1. it is somewhat exposed, and the water can pick up and tows your boat around

2. the end of the floating dock is shallow, I pranged a propeller crossing from one side of the dock to the other

3. IIR, they charge you parking per day, so if you launch on a Friday and return on a Sunday, I think you have to pay 3 day's parking, which was $5/day last time I was up there

I prefer the ramp under the highway bridge near the Twin Bridges storage facility. I don't recall the fee structure for that one though.
_________________________
Regards.

Finegrain
Woodinville