Thank-you for your comments.
I have been looking all over the net for the best place to stay and haven't made my mind up yet; but I am thinking about the Crowne Plaza at the moment in Ginza. The bus from the airport goes straight there which would make it very easy when I get in.
They do have computers available with internet so I should be okay.
I came across
this while I was looking for hotspots.
Maybe someone else may benefit also from this list.
Cheers