Originally Posted by stifle

1. Probably a rollaway single (3') bed. Note that twin rooms and suites have two double (4'8") beds in case this is useful and you want to change your booking.

2. End of March.

3. If you get upgraded to a room conferring executive lounge access, you and one additional guest may use the executive lounge. Officially there is a fee of ¥5000 per further extra guest per day. When I was last there, I was excused the fee for one extra guest, which was perhaps because I was diamond. Chances of all five of you getting lounge access are slim, and if they upgrade you from a King Room City View to a King Room Bay View (which is entirely possible) then you do not get any lounge access at all. As for other benefits, free breakfast is for two people and the hotel provides free internet to all guests anyway.

4. This question has been asked and answered many, many times in this thread. "Best" is in any case subjective and depends a lot on your relative values, time of arrival, amount of luggage carried, and feelings about using public transport. A common recommendation is to use the Narita Express to Tokyo station and pick up a taxi. A taxi costs around ¥2,500 depending on traffic but if there's five of you you'll need two. The Narita Express has very recently launched a special fare of ¥1,500 per person from the airport into town for foreigners.

Originally Posted by some dude

I took this bus from Narita to Ginza:
http://accessnarita.jp/en/home/

Cheap and easy. From Ginza I took a taxi for about 1500Y to the Conrad. "Hoteru Conrad-o Shiodome". A google maps image of the hotel might help, too.