I will be spending a few days in San Francisco at the end of June with my kids (ages 6, 5, and 4). I think I've found a few hotels that I can afford(!) but I'm not sure which one to choose. Could anyone offer any advise on location, safety, cleanliness, etc to help me decide? My choices are: The Grant Hotel (on Bush St), The Star Motel, or Cow Hollow Motor Inn. Thanks so much for your input!