We've had two separate experiences with PAWS.
The first was back in 2014 when my (then puppy) chihuahua was old enough to be neutered. I specifically chose this place based on two reasons: Positive Yelp reviews and being able to take appointments on Saturday without interfering in my work schedule.
My chihuahua's appointment went very well. We dropped him off in the morning and he was finished in the early afternoon. He was a little off his game for a few hours after surgery, but by the next morning, it was as if nothing had ever happened. He was provided with three days worth of pain medication with post-op instructions which we followed accordingly.
Our second experience involved getting a rescue chihuahua neutered. The price of this one was higher once they discovered that he was much, much older than we had assumed. Nevertheless, the surgery went smoothly and much like my puppy, he was as good as new. Once again, medication and post-op instructions were both provided.
As long as they maintain their current hours and keep their prices reasonable, I see no reason to not recommend them. I'm sure there's absolutely nothing pleasant about having your huevos chopped off, but with two problem-free procedures, I'd definitely recommend them for your pets!