Just had our first trip in our 2020 2108DS. I had no problems with the shower head. I'm just under 6'2" so it isn't luxurious, and nothing like the awesome shower head we have at home, but it was fine. I could see going for something better, but not a priority. I'd say give it a try for a few trips and see what you think.
The fan is another matter. We'll be putting one in above the bed at least, and maybe in the bath as well, though they are a bit spendy and the one above the bed is going to take a bit of finagling.