Starting with the Check-in, that was very easy, just type in the code to get in and message you when we arrive. No keys to have to worry about losing or forgetting inside. One can easily take a picture of the code to keep on their phone just in case as well.
Next, I very much liked the location. The Airbnb is near three convenient stores and a short walk from the train station. As someone who commutes to work/ school every day, this was a great location. As a side note, some trains say what stops are next in several languages (including English) so it's much easier for tourists to get around.
On the subject of amenities, I thought they were amazing too! There are several but I'll try to focus on what was used/ appreciated the most. The host provided us with pocket Wi-Fi (15 GB data) and a smart phone that can also be used to surf the web. These were extremely useful for finding directions to where we were headed and occasionally needing to translate to/ from English.
The Airbnb also has an air conditioner in the bedroom. I stayed in mid-August which is when Japan is hot and humid thus the air conditioner was much appreciated! There was also a washing machine (that's also a dryer)! For those who may not see the significance, that means you can pack less clothes as you'll be able to wash them! The host also provided the detergent for the washing machine which was very nice! Note that the unit only spin dries, not with heat thus there will be a need to hang clothes to dry (there's many hangars available).
Lastly, there's a small refrigerator (with freezer) in the kitchen and a microwave above that. Very useful as I normally got breakfast the night before to store and heat in the morning.
In conclusion, I was extremely satisfied with the everything the host provided! I can wholeheartedly recommend staying here and I would stay here again!