Pros
Georgetown has some great benefits, including multiple options for medical insurance, tuition assistance (90% for graduate school classes and 100% for undergraduate classes, I believe), a good 401K plan. The actual work environment is dependent on the person you work for. The campus is gorgeous, and everyone I met generally seemed friendly.
Cons
Academia is generally a difficult environment to work in, and Georgetown is no exception. My PI expected me to work unpaid overtime and on university holidays AS AN HOURLY EMPLOYEE without any additional compensation. This was something that I was never fully comfortable going to HR about, and Some PIs will respect your time and work-life balance, but some will not. Additionally, the pay is quite low for the area.