Good location, wonderful staff, lovely room but a few niggles .....
Stayed here for 10 days on a leisure trip in Oct/Nov. Our arrival was very pleasant especially as my previously e-mailed request for a high room had been accommodated. The room was a delight, large with comfortable, old-style furnishings and a good bathroom area. The coffee-maker was very welcome after a long day out in the city. We did not eat in the hotel at all and we rarely saw anyone going into the restaurant for either breakfast or dinner. Two aspects warmed us to the hotel:-
* the staff were universally courteous, helpful and friendly and greeted us each day; good training in customer service clearly in evidence. 
*the location suited us as the hotel was across a road from a friendly Panera which was ideal for breakfast and from Horton Plaza for shopping, snacks, etc and within 5 minutes walk from the Gaslamp district for dinner. It is also right in front of a trolley stop. We used buses and trolleys extensively and found this an excellent service covering a huge area so a convenient trolley stop was very helpful to us.
The niggles relate to three aspects. The mandatory "resort" (what does this really mean??) fee of $15 per day is actually nearer $17 per day as tax is added and we were only made aware of it after we booked or we might have reconsidered. For this we got a bottle of water per day, no big deal, and internet access which any decent hotel now provides free these days anyway. If these items cannot be provided as a matter of course, the overall room rate should incorporate the cost. It is ludicrous to pay a hefty rate for this hotel (except on Mondays when the rate was reasonable) then be asked for an additional payment on which we had no choice. It is tacky to put it mildly. Weekend nights, ie starting mid-week at $450 per night plus tax cost us almost 3 times the Monday rate so we were not skimping. No doubt there was a convention at the time (when is there not a convention in San Diego?) and other hotels would benefit from supply and demand factors too but this mandatory fee was not something I have since seen in other SD hotels.
Another niggle was that the pool, due to be open "by Fall" was still not open and this is usually a deciding factor for me in selecting a hotel. I was so disappointed on arrival to find that it would not open till December. Fall???
The business centre was a little disappointing too and when I used it to check in on-line for our flights, found that although the room was very comfortable, it had one PC which was not working at the time and a technician had to be called to try to access it, taking over an hour to do so. Not quite what I'd call a business centre and certainly not one I'd use if I were there on business. Again, well-meaning and pleasant staff but not professional in IT skills. 
We did initially like and occasionally used the terrace on the third floor with a spacious lounging area and I had hoped to lie in the sun some days with a good book but on the days when we returned in the afternoon to do so, the sun was always blocked by other high-rise buildings. It may be fine at 10 am but I don't generally lie in the sun then. 
So, overall, would I book the Westgate again? Probably not. The hotel seemed very quiet and devoid of customers most of the time we were there so I wonder if it is falling behind compared with others in this ratings category. I'd suggest the hotel rethinks its policies and practices and move with the times before it fades away from its former grandeur and into obscurity. The location was ideal for us due to its proximity to the trolley but the cost did not translate into value.