The room has most amenities and has space for 4 or 5 to sleep. The space in the room would be pretty tight for that number though. I think we would have struggled for space had we brought our two young children.
The room is pretty close to the subway which does have elevator access to help with your luggage or prams.
The shower has great pressure and is height adjustable. Worked well for me at close to 6ft tall.
The washing machine is outside which was ok for us.
The area itself is very quiet and you can even hear the 5pm melody from the room.
You can see the tip of Tokyo Tower from front door. It's a very comfortable 15 minute walk to the tower. It was also nice to walk to Roppongi at night.