My fiance and I traveled to Portland for an academic conference, and Mark's spot was the perfect spot to recharge between conference activities and adventuring about town. As others have mentioned, it is a great location. Although it was cold (and pretty icy!) some of the days we were there, we walked just around the corner to Mississippi several times for great food and drinks. The bed was perfectly comfy, the lighting in the loft was beautiful, and the bathtub was a nice, relaxing touch.
Mark was very responsive and accommodating, including letting us send some bulky mail ahead of our arrival. We will definitely consider staying here again if we ever get the chance to visit Portland in the future.