accomodations
If you have more time to spare, you can join tours to Las Vegas, Grand Canyon or Southern California by DelTours Inc. Call (415) 434-9801 or 1-800-962-2219 (toll-free for N.America calls)
interesting places

If you are interested in staying a few nights at San Francisco, and under a budget. Below accomodations might fit in your plan.

If you are staying anywhere in America, you can try out Extended Stay, Travelodge, Ramada Inn or Choice Hotels (which consists of Comfort Inn, Econolodge, Rodeway Inn etc)

Below are recommended accomodations. Prices usually range from US$30 to US$180 per night, depending on seasons.

For dining, you can try out Chombar Clam soup for approx US$2.50 at Fisherman's Wharf.... mmm...slurp! Or Chinese Food in Chinatown. Most of the shop owners are from China, Taiwan or Hongkong. They serve various variety of Chinese food which is not available in Singapore.

Shopping: Around 2 hours drive, you will reach a factory outlet located San Francisco. Branded goods at discount prices. You will pass by when you go for a 17-mile Scenic Tour.

The best place to seek directions to the places you are going to, is San Francisco Visitor Information Center, located at Powell and Market Street. Or you might want to visit them online

 

transportation
If you are thinking of car rental, you might want to take their expensive parking fees and limited parking lots in their city into considerations. But a car might come in handy when you want to go for a 17-mile scenic drive or anywhere outside San Francisco (eg: Yosemite Park, Napa Valley etc).