Vantaggi
If you want an internship where you sit around from 9-6 (yep, 9 hour work days) and have literally nothing else to do than apply for other jobs, this is a good place.
Svantaggi
Aside from not having enough (any?) work to do on a regular basis, management is extremely condescending. There is no teaching and when you turn in an assignment you do not receive any feedback. Free labor is expected of you. This place is not set up for interns.
90% of the office communicates exclusively in Russian so good luck with that if you don't know any. The culture consists of Wii Golf during lunch, which the same three people dominate so if you want to play you can't.
In my six months there, I never found out (or had the opportunity to discover) what about 70% of the office actually does. Something with data and phone calls in Russian.