Goober...
Couldn't tell from your post whether you're looking for some games or trying to stay at a tennis resort....
Assuming the latter, there are no resorts within the City itself. Closest I know of is in the Oakland Hills (on the way to Orinda), the Claremont Hotel. Nice courts with a well-run program... Here's a link:
http://www.claremontresort.com/club/tennis.asp
Otherwise, other places in North Bay are the Silverado Country Club and Meadowood Resort in Napa County. Silverado also has golf.
South Bay, the only resort I can think of is John Gardner's over in Carmel, which is run by PBI last I recall.
If you're looking for pickup games, best bets is Golden Gate Park. There's always a good number of people there with various skill levels (mostly 4.0). On weekends, you might also try SF State's courts, off 19th Ave. If you know some members, the absolute best in the City is the SF Tennis Club which has both indoors and outdoors.
Good luck, hit some balls, and make sure you pick up a dungeness with an Anchor six-pack!