Great hosts and great location! If you're looking to stay in Tokyo and have easy access to most places in the city, I would highly recommend Port House Shibuya.
Not only is this Airbnb located near a station only a few stops away from Shinjuku station, but it is also conveniently located near a conbini (convenience store) and a drug store if you need to purchase any bandages for all your walking.
The room was a good size and had a private bathroom attached. Note, the bathroom (includes the toilet and separated shower) is a little narrow but I did not have any problems as a 5'9" / 175 cm person. It may feel a little cramped for someone taller.
Overall, I had an excellent experience and am definitely rating this a 5/5.