I have electric ufh in my ensuite. I don't use it as I know it is expensive and I have a heated towel rail which warms the room brilliantly, plus a couple of bath mats to prevent bare feet on cold tiles.
I also don't have a consistent routine where I shower at the same time each day, so I can't rely on using the timer to keep the cost down. However, if I could benefit from setting the timer for an hour each morning, I would probably use it.