Ohkubos place was perfect for our family of 3. It was small but functional, and we only used it for sleeping.
The amenities worked fine, and we were able to wash and dry clothes overnight which was handy.
The location was perfect, was easy to get to from the airport and then to make our way around Tokyo.
Instructions and communication were very clear and easy to follow, we found it useful to have a few restaurants recommended as well. Would definitely use the apartment again for future visits to Tokyo!