My partner and I stayed at Mark's house on a Friday night in the middle of winter. The room was warm, cosy, and extremely comfortable. The pictures are very accurate.
We loved the high ceilings, huge windows, and comfortable fit out.
Mark really goes above and beyond for his guests. As an example, I broke my foot a week before arriving, and let Mark know that I would be wearing a moon boot. He thoughtfully created a memory foam roll wrapped in a pillow case that I could use as extra padding for my foot in bed. I know it's just a small thing but it made a huge difference to my comfort. He really is a super host.
One small thing to note is that because it was a Friday night we could hear (or maybe feel) some bass from one of the nearby clubs quite late at night. I think I only noticed because I am sleeping lightly as a result of the broken foot (I think I would've slept through it otherwise). Be aware the apartment is about a block away from a few clubs so if you're an extremely light sleeper and you're there on a Friday or Saturday you might want to bring ear plugs. This in no way lessened my high opinion of the stay. Five stars.