Definitely a 5-star stay.
Everything on the Airbnb page--the descriptions and the photos--are completely accurate. The street the unit is on is a bit busy compared to the rest of the neighborhood, but the place is set back and I could almost never hear street sounds and even then I had to listen for them and they weren't at all intrusive. If you like to stroll, you walk out, make a left, and make another left 20 feet along and boom, you're in a quiet, charming neighborhood. In fact, it's nothing but quiet, charming neighborhoods in all directions.
It's a three-minute walk to the grocery store, maybe four minutes to Cafe Vita (my favorite) and a half dozen other coffee places, bars, restaurants, etc in the Alberta Arts district. I had a bike during my stay, which made all of Portland accessible.
The place was extremely clean, great appliances, great lighting, comfortable mattress, good coffee maker...everything was quality and they had everything I needed. The one thing missing were a couple extra hand towels. I asked and they were delivered the next day.
I hope to be back in Portland and if I am, I would stay with Josh and Carlie again in a heartbeat. Great place, great hosts, great stay.