Some informal reviews of the Saint Claire can be found here:
http://pub210.ezboard.com/fpriceline...icID=319.topic
The reviews at the link above were written by people who got the hotel via Priceline stays.
Some of the 3* downtown San Jose zone hotels reported by Priceline users are:
Crowne Plaza San Jose Downtown
Hilton San Jose & Towers
Hyatt St. Claire
San Jose Marriott
Winning Priceline bids for the above have been reported as low as the $40-$45 a night range.
The Hotel DeAnza is a hotel in a renovated historic building (and landmark with their big red neon sign on top). While I've been there for meetings and parties, I've never stayed there so I can't comment on the rooms themselves. As for location, while the hotel isn't right next to the convention center, it's an short easy walk away.