I'm brazilian. Me and everyone I've ever known had electric showers in their homes.
Despite the clickable name, they are perfectly fine. If they weren't, the entirety of latin america wouldn't be using them. The worst case scenareo is if the house doesn't have grounding. In that case you can get a lil' zap when closing turning the shower off while wet. I remember when growing up, my mom would rent cheap apartments in the beach for us to stay a few days during the holidays, and she always made us shower while wearing flip flops to avoid getting the lil' zap. I'm not entirely convinced this worked.