Pros
Benefits and perks but for perks if you end up miserable there, aka working every minute every second and OT, you WILL NOT even get the time to explore those perks.
Cons
Again, don't be fooled by the Harvard name. They lure you in with fair compensation but when you step in, you find the work/life balance, good culture and flexibility they pride themselves about are all not true. Yes they largely depend on the school/department you work in and who you work for etc. but my experience has been nothing short of a nightmare. Extremely high politics and lots of backstabbing. No documented training for new hires, very poorly managed processes, cumbersome system to maneuver through, unrealistic expectations out of you giving you tons of meetings barely can chow down your lunch while you try to work your way through orienting yourself to get up to speed. Up to speed them means as a new hire you are treated as though you should perform like you've worked there for at least a year already. Don't kid yourself to stay or even step into those Harvard doors if you want any kind of quality of life.