I've stayed at the Fairmont San Jose to attend conferences twice now. They have a very polite and helpful staff.
The dining options both at the hotel and in the surrounding area are great, with it right next door to a McCormick & Schmick's Seafood resturant and a Starbucks a block away.
There hotel is split into 2 seperate buildings connected by both an outside courtyard and a 2nd floor enclosed walkway. The tower nextdoor is newer and rooms that are both nicer and larger. I'd aim for that if you can, but the main building is great too.
A cab from the San Jose Airport (SJC) will run about $25 and there is a rental car agency in the building.
The Fairmont San Jose - San Jose, CA is recommended by mark
Located on the corner of South Market Street and San Fernando, in the heart of California's largest city in Northern California near Cesar Plaza Park. The Fairmont San Jose is San Jose's only luxury hotel and is conveniently located in the city centre, near public transportation & restaurants and one block from the convention centre, walking distance to live theatre, symphony, opera, and ballet. Across the street from the Tech Museum of Innovation.
Business Center
Coffee Maker in Room
Fitness Center
Fitness Center
Hairdryer in Room
Handicapped Rooms
High Speed Internet
Laundry/Valet Services
Meeting/Banquet Rooms
Non-Smoking Rooms
Pets Welcome
Pool
Restaurant
Restaurant
Room Service
Safe Deposit Box
Spa Services
TV with Cable
Wireless Internet