We've stayed in many, many AirBnBs in the last few years. The Nook is hands-down one of the best AirBnBs we've stayed in. It is perfectly suited for a short or long-term stay.
The Nook is on the ground floor of the home and the entrance is near the back of the house down a very well-lit path so you feel extremely secluded and safe. It is also very quiet and you don't hear much noise from upstairs. Morten and Gemma have thought of every need that someone might have and provided for it, including plenty of cookware, spices, nice shampoos and conditioners, robes, dog bowls and even a dog bed. Speaking of, it is also one of the best-designed pet-friendly AirBnB. The furniture was made to be comfortable, stylish, but completely machine-washable so you couldn't tell that pets had stayed there before. Also, the wifi was very strong -- we never had an issue even when my husband and I were both taking Zoom calls all day. The place was spotless there were plenty of cleaning products available, especially helpful since we were there for a few weeks. My only complaint, and it is a very small one, is that the hot water in the shower turned warm after about 10 minutes.
The location of the Nook is also great. You're a block or two from two food truck lots where you can get a coffee or a salad in the middle of the day. There's also a Safeway and Walgreens within walking distance. Alberta Park is a 10-minute walk and is absolutely lovely. Nearby is Alberta street which has a bunch of cute shops and popular bars and restaurants. It was really well located. Morton and Gemma are also INCREDIBLY HELPFUL AND RESPONSIVE. They are truly wonderful hosts who go above and beyond.
One thing I will say is that Portland is experiencing a high rate of car theft. If you're visiting the city for an extended period, I would recommend making sure your car is secure - perhaps bring a club for your wheel. It's just a reality of visiting the city right now.