Fantastic place for solo or couple. Very clean and cozy; the coffee bar and provided snacks are an awesome touch. =)
Erin and Havan do a great job of being as friendly/helpful/involved as you'd like them to be. If you're looking for a hotel-like experience (just a place to be and to be left alone to do your own things), you can easily find that here.
If you're looking for someone to chat with for a bit in the evening or on the weekend, play with the most friendly and adorable doggo (George is the best!), or get awesome recommendations for how best to explore Portland, you'll find that here too.
The only downside I could see is that since it's a basement unit, it's lacking a bit of natural light (though there is plenty of stylish and effective artificial lighting). I could imagine that might bother some people. Everything else was perfect!
Would definitely be back if I was in the Portland area again!