Can you find that large room in Tokyo?
I have stayed in a double room for a night.
This room is quite spacious by Japanese standards.
The room is very clean, and modern.
There is a coffee maker, a big TV, a pair of slippers, a bathtub, and a massage chair.
About Wi-Fi access, you have to borrow it at the reception. (It's free).
The location is at the centre of the Tokyo, also it is very quiet and safety at night.
It takes only 2 minutes from the Akasaka Station of the Tokyo Metro Line.
I recommend you this hotel, because mostly Japanese hotel rooms are very small.