Ohkubo's place is very cozy! It looks much bigger in the photos than in person so I would be careful of bringing bigger luggage with a larger group due to space.
Staying in the apartment was super comfortable. It was clean and neatly arranged when we arrived! The location is one of the biggest perks of this apartment. It is literally a 30 second walk from the station, making it super easy to get around.
Ohkubo was very attentive and quick to respond to our questions and messages as well. We loved our first trip to Japan staying in this cozy apartment!