We visited Portland for the first time this weekend and we were fortunate to find a great place to stay. Mardeisy was a very positive/energetic host and her Patton Park North location is very nice and convenient to public transportation. In addition, the neighborhood is close to a number of eateries/entertainment if walking is something you enjoy doing in this very lively and diversified city.
As for the accommodations, we really liked how clean and organized everything was and you really felt like you were at home....very unlike staying in a hotel. The bed was comfortable, there were plenty of kitchen utensils/pans for cooking(should you choose), and the bathroom shower was large and very clean. In addition, things felt very safe(code provided for ease of entry/exit) and the neighborhood was quite quiet.
Definitely give this place a try as a great alternative to hotels....you won't be disappointed!