Although described as being suitable for 7 people, our group found the unit very squeezy. The beds are small. We had to move furniture and the bins to open the fold-out bed and doing so meant the kitchenette was unusable. There is no storage space meaning the open floor area was totally filled with our luggage.
The single shower stall is usable but the hot water does not stay at a constant temperature, especially if other taps are being used. The dish draining board is on top of the stove so we did not find it for a few days.
These inconveniences are all made up for by the cheap price and good location. There are lots of shops (supermarket, conbini, drugstore, post office) very near by and the station is 2 min walk away. There is even a public bath around the corner. Komagome is on the Yamanote line which makes getting around Tokyo tourist spots easy.
All in all a good place to stay that could use some finessing and a more realistic expectation about capacity.