I really enjoyed staying with Mike at the Buddhist Temple. It's right by the Union station in the International Village and only 2 minutes away from the BoltBus stop. Very easy to walk to Pioneer Place, Downtown or even Capitol Hill.
The place itself is definitely rather basic; the beds will be put out at around 9pm and put away at around 8am. Girls' and boys' beds will be separated by screens. The shower is pretty big and new. Mike is very friendly and helpful and super easy to communicate with. I spent 3 nights at the Temple and was perfectly satisfied!