Midori's space was extremely clean and well kept. A lot of house rules, but nothing unreasonable (I.e take your garbage out, sort your garbage etc).
We were 4 grown men staying in the unit, and the bed space (bed + futon) was more than enough space to accommodate. The shower was extremely spacious, and so was the room housing the toilet.
We only stayed for one night, as we were flying back to Canada the next morning but we had no issues getting around. Space will definitely be tight for 4 suitcases, so keep that in mind.
The place looks newly renovated, and does not look the same as the photos (there was no pink in the room either). However, I feel the unit we received is definitely better than the unit advertised as it was extremely clean and (looks) more spacious.
It was a 10 minute walk from Shinjuku station / Shinjuku nightlife, and quiet at night.
I would definitely stay at this place again. Host was unresponsive to my inquiry about early check-in, but as soon as we checked in and had a problem (no pocket wifi was in the unit), the host sent someone to drop off a unit within 45 minutes. So that's completely fine.
If you're thinking about staying here, I highly recommend it.