My friend and I needed a place to crash at night during our visit to Tokyo. This was perfect for that. It's super close to a train station, and conveniently located in the Shinjuku area, but in the Shibuya direction. It took us between 30-60ish minutes to get most places, which is pretty good for a city like Tokyo, especially when the things you want to do are all in very different locations.
Just be aware that it is a truly tiny apartment. If you have a lot of luggage, this might be a challenging place to stay. My friend and I managed fine, but we were also traveling with just a hiking backpack each, and it was squishy. Again, we just needed a place to sleep at night, so this was perfect for us.
The host was easy to talk to, and was able to provide helpful clarification to a few questions I had.