Unfortunately lodging in the Bay is not cheap. However! For a slightly more budget-friendly option, you're welcome to look into booking a hotel or Airbnb on the outer edges of San Francisco, or in our fair city of Oakland. Travel across the Bay will take about 20 minutes by Bart.
For proper hotels, you'll likely have better luck booking on sites like Booking.com, Kayak.com/hotels or Expedia.com/hotels rather than booking through the hotels directly.
Fly into SFO or OAK!
From either you can take BART or catch a Lyft to San Francisco.
Hotel Zelos is located 1/2 a block form the Powell St BART station.
Please be advised: For those planning to rent a car, hotel parking in SF (much like everything else, let's be real) is pricey. Parking at Hotel Zelos (valet only) is ~$60/night.
From the PNW, take the Coast Starlight line to Oakland.
From the South, take the Sunset Limited to LA, then the Coast Starlight up to Oakland.
And from the NE, take the Lakeshore Limited to Chicago, then the California Zephyr to Oakland.