I had a hysterectomy when I was in my early 50's because of endometriosis and ovarian cysts. I'm now 68. We left one ovary in even tho I'd had a cyst on that one. They cyst had been a couple of years earlier and resolved on it's own. My Ob/gyn said that it's best to leave an ovary if at all possible because of the hormones our body needs from it. I was on HRT for a few years until medical science decided that it was best to not be on it unless it was absolutely necessary. I had no difficulty going off HRT.
That one ovary did have a cyst a time or two after the surgery but they always resolved quickly on their own.
I was off work for 8 weeks. I've had several abdominal surgeries and the standard seemed to be to stay home for 6 weeks. Perhaps that was because I had a high stress, physically demanding job. (police officer) Or Maybe it's different now. I did have the option of desk duty but don't think I could've managed even that after the hysterectomy. I was exhausted and had very little stamina. I started out before the surgery very tired because of the chronic pain of the endometriosis and cysts.
I would guess that recovery time would be very similar to the recovery time after a c-section. Abdominal surgery is abdominal surgery.
I took prescription pain medication for a week or two and then took ibuprofen. My abdomen was tender for months afterwards. My endometriosis had migrated outside my intestines which meant they removed them to clean the endometrium out.
I still had low level chronic pain monthly until I went thru menopause because they were unable to remove all of the endometrium. With one ovary left the body continues to have menstrual cycles. We just don't menstruate. The pain was never as severe as it had been before the surgery.
We need the hormones that ovaries produce to protect us from a wide assortment of conditions. HRT doesn't do as good a job as our ovaries do. If I were to do this over again, I'd still leave one ovary in.