If you go to the Redskins official site, they have a deal where you can buy a package from them that includes tickets and hotel accomadations for away games. The hotel is the official team hotel, and I think you can even have breakfast with some of the players. Anyway, if you call the number provided and ask them what the hotel is, I'm sure they would know and be able to give you the pertinent information.
BTW - I'll be at that SF game, as well, and as the date gets closer, I'll start an official San Francisco thread so that everyone going to the game can meet up beforehand and maybe do some tailgating!!
"I've said a lot of mean things over the years about Philadelphia.
And I meant every one of them." ~David Lynch