Just took this bus to Narita Airport this morning. I hoped to take it into the city too but I just missed it.
The bus is almost brand new. It has 4+1 seats per row. The fare box has a felica reader for ic cards such as suica, but when I inquired the driver said cash only. The bus does not have onboard lavatory. There was another company rep along to assist with loading and unloading of luggages.
I boarded the bus at the starting bus stop near Yurakucho station. 4 passengers in all boarded here. The Yurakucho station is also used for other routes depending on time of hour. The bus left right on time at 7:25.
At the Yaesu stop, the bus picked up about 7-8 pasengers. The bus departed about 3 min late, but still made it to T1 at scheduled time of 8:40. We did not encounter any traffic during the outbound trip.
In all I am very happy with the price and performance of this service.
http://yfrog.com/h3f79ubj
http://yfrog.com/h2iq9xnj