We rented Alan's fabulous "tall skinny" condo for my parents-in-law during a busy graduation trip, and it was a perfect spot for them. Simple and contemporary decor, very clean and new feeling, lLovely bathrooms and laundry, easy to use kitchen, amazing outdoor roof deck (it was raining but they still wandered out to look at the misty lake). We're all in good shape for lots of stairs, which is mandatory for this vertical home. My teenager spent one night with her grandparents and said she didn't hear street noise at the back of the house - much quieter in the lower bedroom than we anticipated. It is very open plan inside the home, so sounds travel between floors, but we didn't have any noisy children or people with radically different sleep habits, so it didn't matter (ymmv).
We hope to be able to book this home again the next time my in-laws come to Seattle. Absolutely recommend for anyone coming to the Phinney area (who is good with stairs).