We had a terrible experience finding this place.
1. The host only gave map directions from Narita and Hanida airports to the Shimbashi station without any written directions. The Google map is in Japanese so it didn't help.
We were coming to Tokyo station and had to take a taxi but there is no written directions for taxi.
2. Our taxi driver wasn't able to locate the apartment using BOTH the English address and Japanese addresses provided by the host. After driving us around Ginza for almost an hour, he asked me to call the host for help. However, I wasn't able to reach the host, instead I got someone who acted as the on-call person for this host. She wasn't able to help the taxi driver to take us the apartment using the given addresses either. Finally, the taxi driver asked us to get out of his cab and refused to take our money so he can pick up other fares.
3. The host's operator then asked us to use Google map to find the place ourselves and wasn't of any help. We were practically stranded in Ginza.
After walking around the neighborhood for 15 minutes, a Good Samaritan lady in an office building nearby was able to help us locate the apartment which is a block away from the addresses provided by the host. It also took this lady a good 20 minutes to find the apartment building.
I'm an experience traveler and very good with Google maps and finding directions.
The communications from this host are horrible. She didn't even admit that there were something wrong with her directions. Be prepare to be stranded if you happen get lost because the host and her people aren't helpful and not ready to assist you in such situation. I've never felt so helpless. It didn't help that I also had my mom and my aunt with me and with their luggage in tow.
4. This place doesn't come with a pocket wifi.
5. The apartment is very modern and spacious for 3 people. It's also within walking distance to restaurants, train stations, and a public park.