Extremely disappointed and ripped off
We are just back from a tour of California and I feel I must write this to warn others in our situation of what lies ahead for them if they book here.
Firstly, we travelled with Virgin Holidays and whilst I had been alarmed by reports that parking was charged at $32 a night, I was relieved to hear when booking that it was complementary for Virgin guests (infact it was one of the reasons for choosing the place...) When we checked in we were promptly charged in advance for 3 days parking - nearly $100 bucks!!! That is a total rip off because the "resort" is in the middle of nowhere and there are loads of parking spaces surrounding the hotel (but you can't park between 2am and 4am......)
Secondly, we were not aware that the hotel is miles from the centre of San Diego. It is about 4/5 miles out and it is even quite a distance from the Old Town if you want to see anything of San Diego - which everyone should because it is a wonderful city. We went into the Old Town on our first (and as it turned out, only) night at the Hilton and were told it would be cheaper to use the hotel's own transport to get there and back. Wrong again! We were charged $12 one way for transportation to the Old Town in one of the hotel's minivans (which was taking other guests to the airport anyway and it was en route for the driver) and a lot less by a random taxi driver we picked up in the Old Town to bring us home again. 
Thirdly, the room we were given was in the block opposite the main check-in area. We were told on check in that this was a "really nice room". Wrong again - It was dark, dingy, tatty and with a lovely view of the car park, railway line and busy motorway outside. My partner (who is a heavy sleeper) heard the traffic outside all night long. 
We had a lovely trip to the US and stayed in some fabulous hotels. This was our last stop off point and I was in tears at how shabby our treatment was at the Hilton and how run down the hotel (or the parts we saw) was. It was the first time we've stayed in a Hilton and if this place is anything to go by, the last. We are not difficult people and will put up with a lot but we asked to be moved the following day to another hotel and were relocated to a fabulous place in the Gaslamp district (the Andaz). 
We paid a lot of money for this hotel and felt very ripped off. I can't even say the pool area was nice - it was full of kids, noisy and shabby. We were fortunate in having booked this hotel through a tour company so had some sort of protection. . 
If they offered a decent price for the hotel/resort and significantly reduced their ludicrously expensive parking fees, this resort would probably suit a couple with small kids who don't really wish to venture far from their base. If, on the other hand, you wish to get out and about and actually see some of San Diego, you will spend a fortune on cabs and parking fees. Avoid!.