Since I am the contractor and not the home owner I can't really say for sure. My guess is that some water does splash out but this is also a shower for a couple with no kids.

Little Dipper 560E-1 by Behr is similar.

The Tile Shop is a great resource and has a white subway tile on their website that looks similar to what is in this shower. Here is the link to their site -- http://www.tileshop.com/walltile/subway/Oxford-White-Subway/2056.aspx. It's worth it to browse around the site too!

This look like the strand pull from Restoration Hardwre.
http://www.restorationhardware.com/catalog/product/product.jsp?productId=prod1283123&categoryId=cat1512023

Yes it is Restoration Hardware. It was a few years ago though so I don't know if they still stock it.

This is all an estimate, but assuming that the shower is a little over 10 tiles across (with each tile being 6" long), then I would say that it is 5' across. I would also assume that it is square, so it is probably 5' across on both sides. It is hard to tell from the photo, but it looks like the shower is 33 tiles tall. With each tile being 3" tall, then I would assume that the shower is about 8'3" tall.