Pros
At least paying lip service to providing professional development opportunities, good guest speakers, friendly staff
Cons
Army of interns, with very little substantive work available to undergrads -- what substantive work there is will go to the law students. (The most substantive work that undergraduate interns seemed to receive was to do citations for law students and to copy and paste news articles into emails.) A lot of focus on Prof. William's marketing projects, which includes making videos for PILPG marketing/internal onboarding, staffing and writing invitations for events designed to increase PILPG's name recognition, and website redesign. The focus of the organization often seems to be on promoting its founder rather than promoting its work, and as an employee it's difficult to see or quantify the organization's impact. The bulk of the work also does seem to be training of trainers, courthouse monitoring, human rights documentation, etc. instead of the constitution-writing and peace negotiations advertised.
As an intern, I would not recommend choosing PILPG if you have other options. Since it is unpaid, the reason to come here would ostensibly be for professional development and learning opportunities, but unfortunately there's very little of the latter, since the work you will be doing is primarily logistical and marketing-based. It is possible that you might make connections at PILPG, but the organization seems no better than many other similar ones in that regard.