I stayed here 4 nights with my wife and my dog.
Really enjoyed staying here and actually felt like a high end hotel you'd get in Asia.
1. Facilty - Really impressed with the decor. Bright, modern but warm.
As soon as you walk in, lobby alone is quite impressive for a building of this size.
Also, the diffuser used at the hotel seems like sandalwood, not too strong but very elegant. Loved it. Gym is clean and sufficient, pool area is small but quite nice. Really the courtyard in the middle of the hotel.
2. Service - Everyone that I have interacted at the hotel, Liz & Sophia from the front desk, and Mark L from Club Lounge was so friendly and helpful. We stayed at Hyatt House right before this stay and can totally feel the difference. It really seemed like staff at Sheraton San Gabriel "cared" which seems rare these days in the U.S.
3. Room - Everything was immaculate and clean. Bedding and pillows were plush and comfortable. Decent sized room with lots of sunlight if one wished. Very well appointed. Decor was definitely relaxed, I'd call modern classic. One can easily tell this hotel is well run and maintained.
4. Location - In the middle of SGV, Asian food capitol of SoCal, if not all of US(w/ exception to Korean food). It's conveniently off of 10 fwy near Del Mar so you can easily go to LA/OC.
5. Breakfast - Breakfast at the Club Lounge is quite good(given it's complimentary). Excellent are the espresso, hot breakfast items(eggs, sausages, etc) and the fruits. I must say the fruits are the most impressive, fresh, ripe and juicy. Whoever sources these fruits should be given a medal. Service is top notch as well. Mark L. who served us on the last day left quite an impression. His level of service was that I received at top notch restaurants. Only thing I would improve here would be the bread selection.
Overall, this hotel exceeded all of our expectations and than some. I have noticed significant drop in service after service for many hotels but this one excels. I have not cared for Bonvoy but because of this experience, I may switch from Hyatt. (Hilton, you still suck) If you have plans to visit LA, I would strongly recommend this hotel. Absolutely the best experience I've had in US hotels in recent times!