I love staying at the Harbor Court when I'm in San Francisco. It's small but clean, with comfy beds and pillows. Breakfast in the morning is quality coffee and tasty pastries, and they've got a serve-yourself wine bar happy hour every evening. My only complaint is that the TV is just basic cable and we couldn't figure out a way to cast Netflix or similar from our phones. Oh, and the bathroom light is motion-activated, which is an unwelcome surprise at 3 a.m.!
The location is excellent for walking up the Embarcadero, over to the Ferry Building, or down to a Giants game, plus the BART station is just a few blocks away. A perfect location for visitors wanting to explore SF's many beautiful sights.