Pros
Management reached out to me to make sure that I was happy with the internship and had everything I needed to succeed. My manager met with me every Friday for an hour to talk about my work, the internship experience, and my future among other topics. I worked on many systems that will lead to great career opportunities, and wasn't viewed as a grunt work intern, they wanted interns to do real work. Interns had lunch and meets with all the top execs, and the CIO even had a 30 min meeting with me later in the summer. The headquarters is an absolutely beautiful building.
Kontras
Some employees and managers clearly didn't get along, but that is expected in the IT field, where business sense and IT sense don't always meet. Cubicles are the only office areas except for top execs, even directors have cubicles. No overtime pay, so even if you work over 40 hours you weren't allowed to put it in the system, but it was very rare for me to have to stay late (not sure if that was the workload or the fact that I just worked hard).