I had a wonderful time staying in Katie's basement during my too brief visit to Portland. My hosts welcomed me and gave me a pleasant send-off as well.
The space was exactly all that I needed and expected it to be--a cozy room at a good price--and I kept busy enough that aside from sleeping I hardly spent any time in the room.
The location is a short walk from, well, everything... I recommend Ken's Pizza (& Heritage Barbers if you're in need of a trim)... and downtown Portland is easily accessible via transit, or a pleasant stroll (weather permitting).
Should I find myself fortunate enough to visit Portland another time as a solo traveler I'd gladly stay with Katie and her family.