I did not have ECT, but something very similar. The idea was still to induce a seizure; it was just induced in a different way. But, the general procedure except for that--which happens when you're unconscious--is the same.
Are you looking for experience of the actual treatment itself? The cognitive side effects?
I had it 3 times a week. Sometimes it is 2, I believe. Always in the morning, and I was not allowed to eat or drink anything after midnight the night before--no breakfast.
They could do several people an hour--it is quite quick. In the actual treatment room there was the psychiatrist administering the treatment, the anaesthesiologist, and one or two nurses. You lie down on the bed, they set everything up, they put you under for about three minutes. Supposedly due to the muscle relaxant, the seizure looks like little more than a twitch.
Then when you wake up (if you're lucky, unlike me, and don't wake up too early), you've been wheeled into a recovery room of sorts where there are a couple nurses who check your vitals and just generally make sure you're doing OK. I'd stay there, on the bed, for another 20-30 minutes, and they'd give my juice and cookies if I wanted it. Additional patients would be wheeled in every 10 minutes or so.
I had it outpatient. Even after I left the initial recovery room, I had to wait an hour or two before they would let me leave, just in case. And then, I could not leave alone. Every week or so I would meet with the psychiatrist to see how it was going.
I could not tell if you all of that is standard or what; it is just my experience. Not ECT, but we'd all wait together with the ECT patients, and the general procedure for them was the same except for the actual treatment.
I think for ECT it is usually 6-12 treatments, and there are both unilateral and bilateral options. It was a little different for what I had.
My experience beyond that might not help you a great deal because:
1) I woke up too early multiple times (before the muscle relaxant wore off, i.e., while paralyzed) which badly traumatized me and colored my perception of the whole thing. (This is NOT common.)
2) The type of seizure therapy I had does not seem to have cognitive side effects, so I couldn't comment on those.
3) It was not successful for me. (Well, maybe it would have been if I'd had more treatments, but due to #1 I had bad anxiety, so, uhhh....)
If there is anything else you think I could answer, just let me know. But yeah, my experience was a little unusual and I did not exactly have ECT.