Firstly the good: location, right in Sunshine City. Has direct limousine bus to the airport. The rooms are also larger than most hotels in Tokyo, that I actually have room to open my suitcase, which is rare in Japan. It is also very clean, but all Japaneae hotels are clean so it's about average (Japan standard).
Now the bad: AC! It has been a long standing problem every rime I stay in this hotel. For some reason their AC is either not powerful enough, or they choose to keep the temperature higher than usual. I stayed in summer, average temp is 35⁰. The AC was never enough. Fortunately, they have electric fans. I suspect many people have the same issues hence they keep a few. Personally I had to have 2 fans on all the time, with one blowing at me directly, and sleep almost naked. Many other hotels I've stayed have individual room temp control but not this one, which is a shame.
Hope they can improve this somehow in the future. But in the mean time, if you are someone like me who can't stand heat, make sure you ask for the fan before you check in.