I've never had it done, but here is some info I picked up online about it.
It's an outpatient treatment in which it does not require hospitalization. Most women can return to normal activities in a couple of days after the treatment. If your treatment is successful, it will reduce the amount of bleeding dramaticly, some woman have no bleeding after anymore. Normally you can go home after an hour it was done, and you may have some cramping on and off. You can also have an increase in discharge during the first 2-4 weeks, this is normal because of lining is shedding. Also, sex is normally restricted for 2 weeks after the treatment.