Great place! If you need a place in Seattle that can accommodate a larger group this is a wonderful place the stay. The house is beautifully finished, clean, quiet, and very comfortable. The area the house is situated in is within walking distance to restaurants, shops, and well-appointed grocery stores. If you are a runner or cyclist, you are located within .9 miles of Green Lake, which has a wonderful 3 miles running loop around it, or within 2 miles of the Burke-Gilman Trail.
The booking and check-in process couldn't have been simpler. Hellen was super responsive to questions and was incredibly easy to work with.
As far as the rooms setup:
Main space: There is a large great room that includes several couches and a dining table. Great for hanging out and having meals. The kitchen is large and offers bar stools and a small eat-in table if desired.
Sleeping: There is a large bedroom with queen bed downstairs and a bathroom with full shower, and upstairs there are three additional bedrooms—a master with a king bed and attached bathroom, a room with a queen bed, and a smaller room with a twin bed. The hosts provide an air mattress that could fit into the room with the twin bed, or could frankly fit in either of the closets in the larger bedrooms.
I wouldn't hesitate to stay here again!