1234 House was great! Although we only stayed there for a night, we had a wonderful experience in the Tortoise Room (which, incidentally, has a bathroom outfitted with a Toto toilet and three shower heads - it was one of the most amazing shower experiences I've had in recent memory).
The place was very easy to get to, and walking distance to lots of coffee shops and places to eat. Evan was super gracious and friendly. He offered us coffee, sparkling water, and food that he was making for a group meal. He also let me hang out in the common room (and listen to some of the amazing record collection) even though I arrived three hours early. The space has an eclectic vibe, with a piano and lots of knick knacks to peruse.
Our room was ready well before check in. Once we were there, the number lock system on the doors was extremely convenient, as we didn't have to carry around keys. Upon checkout, we left our bags in the common space, and returned a few hours later to collect them.
I would definitely recommend the Tortoise Room as a home based to anyone interested in exploring SE Portland.