I think they're all different
I've detoxed at several different places; it really depends on where you go. If your paying out of pocket or thru insurance I'm sure it will be a much better facility. But sometimes even state funded clinics are very nice. The reason she is probably suggesting that you do medical detox is because of the withdrawl effects.
For alchohol the librium is very helpfull for the shakes. Which if you drink a lot the shaking alone can drive you nuts but can also cause you to have a sezior.
If you have insurance, I would go on-line and research different facilities in your area; they usually have websites which give you the basic information.
Even if you don't, most of the detox/rehab facilities in my area have websites with all this information. I would just ask her to give you a list of places that she would recomend and look them up to see their program.
Good Luck!!