Yep, seen your question in the more relevant thread:
http://www.flyertalk.com/forum/23651974-post154.html Sorry, I have no idea.

For someone who says they can't walk too far I'm actually quite worried about you installing yourself into the IC Yokohama.

I stayed there for 9 days a few years ago (just before my back gave up and had the operation, did have sciatica at the time).
Either you will need to get a train each and every time you go anywhere (and the costs will rack up, so please factor this into your budget) or you will have a long, long trek through a never ending shopping mall just to get to the edge of the Yokohama Bay Area

I can not overstate how much walking can be involved for those staying at the IC Yokohama and watch out for the "premium" ocean view rooms that feature views of, you guessed it, the ocean. Sounds like it should be glorious; blue seas, blue skies, a balm for the soul, the reality is that the view is usually grey, murky and, frankly, depressing. Out of the 9 days I spent here, at least three were spent in tortured misery as I got kidney stones and had to flush them through my system. I'd actively turned down an upgrade when checking in and was so pleased I did, spent A LOT of time gazing out of the hotel room window and the view over the Cosmo Amusement park and the Yokohama waterfront really helped me keep my spirits up. Had I spent that time looking out over an expanse of grey gruel in turmoil it could well have tipped me over the edge.