We received a room at the Clarion Hotel San Francisco Airport, complements of the airline, due to their overbooking of a flight from Seattle. We were rerouted to leave from San Francisco the next morning.
The room itself was acceptable, but not great. The front desk staff person was unfriendly, barely helpful, and had an attitude - unacceptable for customer contact. They want to gouge you on parking. My impression is that this place was cheaply built and wants to charge higher prices to pretend they're higher class than they really are.
If you should eat at their restaurant, your parking is validated for a few hours without charge. Their buffet dinner was all right for $13. What was outstanding was one of their two dessert items.
My partner wanted to go to the bars in San Francisco, but stayed too long, missed the last BART train back to San Francisco airport, and had to shell out an expensive taxi fare back to the hotel. That's a problem if you're staying far from the entertainment and nightlife and you like to stay out late. Any savings will be eaten up quickly with an expensive cab fares. Better to stay in San Francisco, preferably close to where you want to be, unless you're flying out of the San Francisco airport early. In either case, I wouldn't want to stay here again.