2 night stay
I recently stayed at the Hampton Inn and was happy with my stay. I arrived early at the airport and the shuttle arrived within 10 minutes of me calling the hotel. The shuttle driver was a very polite gentleman and we were at the hotel within 5 minutes. They had a room available so the early check-in was much appreciated. The room was spacious with a king size bed that was comfortable and my view was of the courtyard and train tracks. With the “quiet zone” now in effect I did not hear any loud train horns during the middle of the night however you will hear some noise from the trolley/train signal in the morning. 
The complimentary breakfast was always good and coffee is available 24 hours a day. They also provide 2 computers for guest to use and free wifi. The location is great, just a quick walk to downtown and the harbor and the trolley station is directly behind the hotel. I would not hesitate to stay here again when I travel back to San Diego.