TLDR; No WiFi, extremely dirty and terrible service from (very stingy) host.
I am writing this so that other people are aware of the quality of service of this place.
I live in Japan. As I have a small apartment, I booked this airbnb for my 2 family members who visited me for 7 nights.
I brought my family directly from the airport and we arrived at the airbnb apartment around 8PM. We were already obviously very tired. I immediately start checking the WiFi while my family is looking. There was a WiFi device but it was not working. After 30 minutes of troubleshooting, and since I have internet on my mobile phone, I call the the host. After telling him that we did not have WiFi on the apartment, the best he told me, to my dismay, was "what can I do to help you?". He then proceeded to say "I will contact the management company. I am sorry for the trouble". I was baffled. I hoped he would have done one or several things such as 1) telling me he would be sending someone to the apartment to check if the issue could be fixed during my family's stay 2) tell me a date by which the issue would be fixed 3) temporarily lend us a pocket WiFi until the issue was solved 4) promptly offer me a partial refund for the trouble. He did absolutely none of this.
It was already 9PM and I was also tired so I went back to my own apartment where I live. We did not check the apartment in detail, as we were tired and only focused on the WiFi issue. My family would spend the night in the apartment without WiFi access or any other means to contact me to tell me of what happened.
The next morning I go to the apartment in the morning around 10AM to check on my family.
My family members immediately complained saying that they had a hard time sleeping due to the cleanliness of the place. It was a complete mess, so much that I immediately cancelled my reservation and asked for a refund. There was a significant accumulation of hair, dust and lint between the toilet and the seat lid, and overall in all corners of the apartment as well as in the window side. I am not talking about dirtiness that happens in 1 day or 1 week time, I am talking no less than 1 month. In Japan, you're not supposed to use your shoes inside home so there were a couple of slippers to use inside, both of which had big white stains as if someone dropped milk or yogurt on them. Those could be washed, but they were just like that as if no one cleaned. Also, there were no bed sheets. There were 3 bed pillows and 3 bed quilts. 2 pairs of them were brown and 1 pair was white. The white bed pillow and quilt had no covers and you could see big yellowish stains on them. My family had no way of washing them and had doubts about the cleanliness of the brown ones as they didn't smell fresh at all. You had no other option but to use them against your skin and face, or not using them at all. Very disgusting. As you can see, my family decided not to use them and sleep against the hard wood floor.
I immediately use my mobile phone to message to ask the host for cancelling the booking and for a refund. Instead of doing something about it, he only accepted "20% of refund for the trouble caused by WiFi issues", completely ignoring the fact that we asked for cancelling the rest of the nights. Then I told him that I was willing to pay for the 1 night that my family stayed, but that I wanted the refund for the remaining 6 nights, and the cleaning fee and service fee because of the quality of cleaning and terrible service. Instead of genuinely apologizing as would be expected from a typical Japanese native, the host proceeds to saying that because we didn't checkout before 10AM, he wanted to charge us for 2 nights. Stingy and ridiculous.
This was as far as I could go. I immediately contact airbnb support and send them the photos and, upon confirmation of what happened, they promptly refunded us for the entirety of the trip.