The space is small and cozy, definitely a bit cramped for two grown adults and two large suitcases, but it's doable if you're willing to compromise space for a big bed. I and my roommate slept comfortable on the bed. The bathroom is small but that's understandable because it's Japan. We were very grateful for the washer unit in the room and the easy access dry cleaner down the path, but if you don't plan on doing your laundry then the washer can take up unnecessary space. The closet space could have been very helpful to store away out luggages but it was taken up by a rolling hanger, an empty suitcase not ours, and a vacuum. We were also really grateful for the provided body mirror lol. The room was very clean (though the bathtub clogged up at one point) and amenities were a+ satisfactory. The room was a bit hard to find and the staircase down to the door (and area of the door) is definitely cramped; we had trouble getting our luggage through, but it's cozy for just daily in and out.
Yuka was very helpful and informative with her responses. I forgot my earrings in the room after check-out and she responded to me within hours to let me know that the cleaner did not find my earrings. Me, being upset about my lost memento from my mother, insisted and Yuka was reasonable and respectful to offer to check again the next day. Thankfully I found my earrings on my person. I would definitely stay on Yuka's room again in the future if opportunity permitted.