Hopefully this works. I have two baths we just finished. The master is Daltile Brancacci with the resin chair rail and floral listello Fastfloors.com had this for 1/2 the price as special order from home depot. You have to call them though after you get your order set up to fix any shipping issues (they do each type of tile as a seperate order so shipping looks much worse than it really is until you call them). The other is our kids bath with 4 1/4" plain white tile and 2" cobalt blue glass from mirage tile. Note that the glass tile is thicker so you will have to put down more thinset behind the remaining tile and the grout joints around the glass will be larger due to difference in tile sizes. Here is a link that might be useful: fastfloors

No experience with the shower tornado, but I'd love to hear the reviews too. We do have a walk-in, door-less shower with a bench and I don't find it to be cold--& I am almost always cold anywhere else! Our shower is ~4'x7'. The entry is on the short end with the bench on the short end opposite the door. The shower head and handheld shower are placed on one of the long walls side by side. Our builder swore we would have 2 things happen--the shower would be cold and we would have water splash out onto the bathroom floor. He pushed us to install a heater over the shower, but we chose wait and see what we thought after we had actually tried it out. So far, neither of us are cold in the shower and we haven't had any issues with the water splashing out. We have an overhead rainshower, but we hardly ever use it. Here's a pic of our shower: If you're thinking about planning for the possibility of needing a fully handicapped accessible shower you will need to plan for at least a shower thats 5'x5' to allow for a wheelchair to turn around in. This is what my parents have for just that purpose--their shower is 5'x6' with a 3.5' entry on the 5' side. I've used their shower before and it doesn't get cold either. I will say, our seat could have been deeper--its only 12" deep. 16"-18" would have been more ideal. Another thought is to not do a built in seat, but have a removable stool/seat/bench--plenty of threads on GW on the pros & cons of each seat option. As far as storage, the answer is niches built in to the shower wall. They are built-in so they don't protrude into the showering space and offer a myriad of options as far as how to set them up (i.e. shelves or no shelves, tall & skinny, short & wide, double decker or single decker, etc). If you look close in the shower pic, you can just make out the little ledge where our niche is and a sliver of an orange shampoo bottle just in front of the 1st shower head and shower controls. Hope this helps!

Any shower smaller than 36" x 36" will be nearly impossible to use. I think I have seen as small as 32" x 32".

6" is probably most common because of accessibility and price. It is by no means standard though. I've done them with 3", 4" 5" and 6" as well as LED panels. With a 66" long shower I'd have put in 2 @ 4" dia. but that is me. If it has enough light to do your business in there, then I wouldn't worry about it.