Pros
I joined Gladstone Institutes as a postdoctoral fellow and stayed for a number of years. By default your graduate or postdoctoral experience/progress will be shaped largely by your mentor but the environment and institutional support also plays a tremendous role. I can say that as an institution Gladstone is a very unique place and that I have never visited an academic organization where so mach effort and resources were directed towards the long term success of their trainees. From regular workshops, career-furthering and networking events, to counseling and infrastructural support - postdocs and grad students are being treated like royalty.
Cons
Any cons that I have from my time at Gladstone are related to the PI I worked with or SF as a super expensive city and I honestly can not say anything negative about Gladstone per se.