1) Simply the wealth of opportunities this job offers - the variety of the work, both across functions, industries, and geographies.
2) The great people here, and the amount of effort they put into mentorship
There seems to be quite a variety of working conditions/hours between summer consultants, but that is largely expected with the territory.
Advice to Potential Interns
See if you can talk to one of the partners that leads an office, and ask them what makes Kearney different, and ask them to provide examples. Kearney wins in the marketplace because it is unique - find out why.