The hotel room looks renovated recently, it was a tatami room in the 14th floor, looks where very nice.
From arrival there was no possibility to early check inn, even offered for parents with children we were very tired after a long flight and the front desk just said no early check in without not even making an effort to see if a room was available. Staff speak very little English.
Biggest problem is the dirtiness, the room felt dusty from the first moment. On the first night my 5 months baby started sneezing frequently, we thought it was an allergy but after 3 days going on an about in Tokyo we realize she didn't sneeze outside, only in the room.
I then inspected the room better, there was piles of dust in corners, behind beds, on top of TV and lamps, behind curtains, the carpet on the entrance was the worst. The bathroom was not clean also, there was mold growing in the bathtub joints with the wall and in the sink. The in-room refrigerator was also moldy.
We then complained to the front desk and asked to deep clean (in Japanese and English), they cleaned the bathtub mold, and the air filter, but still there was hair and dust accumulating in the corners. I then complained to night staff manager and he offered a new room but he wanted to check, from my room I could hear the managers cleaning the next room, when they offered I then checked and showed that there was still parts with dust and mold, they cleaned a bit more and apologized saying that the room will be better cleaned next day.
Deep cleaning never happened on the following days even we complained every day. One day they left us a vacuum in our room to clean ourselves (I took this as a mistake, but it was clearly for us to deal with the dirt). They offered breakfast tickets as compensation, we tried the breakfast one day and never came back, the breakfast was so bad that even as free I prefer to eat somewhere else.
The manager has apologized by email and offered to return about 100$ of the cleaning fee (from a reservation we have paid more than 1000$), we have not yet seen the refund after 10 days.
Good things, location is very good and Wifi is also good.