Stayed here for 3 nights in early September. This was truly a great location because the race I ran was right outside the hotel. All employees that we encountered were friendly and attended to our needs/requests promptly. The front desk staff did a great job with our check in and departure. Our room was on the 2nd floor (small balcony) south side with a partial water view (it also faced a neighboring hotel) but it was very quiet. Lots of comfortable social areas inside and outside the property. We enjoyed poolside a couple days. Breakfast was good.
Shuttle service to and from the airport was prompt but make sure to reserve your shuttle (at the front desk) for your departure time to the airport. If the shuttle is available, they may be able to take you to a local restaurant. One night we had about a two mile ride to one of the local restaurants on Shelter Island. My wife arrived late into SAN (after 11:00pm) and had to take a taxi because the shuttle stops around 10:30. Not an issue since Marriott reimbursed us the $12:00 fare.
Plenty of good shops and restaurants within a mile walk of the property. There is a Trader Joes and Von's within a short 10-15 walk if you need to stock up on supplies.
Nice area and great hotel. We would definitely stay here again. It's all good.