San Francisco Travel cuts up to 30% off stays at Hotel Zephyr in San Francisco, CA, with prices starting from $125.30 per night, as seen on Travelzoo. (We found this rate on December 20; although San Francisco Travel advertises rates from $149 per night, we found lower rates within.) That's the lowest nightly rate we could find by $27. This 3-star hotel on the waterfront has an Expedia rating of 93% based on 448 reviews. Book this travel deal by December 31 for stays through the same period.