Nice space, good hosts, great location.
The loft is a nice space for, I think, 2 to 3 people, maximum, with really good hosts, in an excellent location.
The space: The space is clean and has good amenities. However, there is very little room to unpack luggage and lay out, for example, clothing. On the bottom floor, the two futons take up all but a small area to walk from the front door to the kitchen, which leaves almost no space to set down luggage. I suggest the hosts consider perhaps adding some shelving above the futons for clothing, or at least a folding luggage rack, or ideally, both.
The loft is nice, but the stairs (which double as shelves) are quite narrow, so older or less agile guests may have difficulty climbing to the loft. There is plenty of room in the loft to lay out luggage, but we opted not to do that because it would require too much climbing up and down.
The space is quite new, which we appreciated, and it was stocked with towels, soaps, toothbrushes, and all the basic amenities.
The location is fantastic. We were about a ten-minute walk to Shibuya Station and plenty of shopping and food, and yet the street where the loft is was nice and quiet.
Overall, I recommend the space, though for a maximum of three people.