–Make sure to purchase enough tiles to finish the job, plus extras for any future repairs. The exact tiles may be impossible to find later.
–For an easier installation, place whole tiles first, and then come back and place cut tiles.
–When focusing on boosting value, select larger tiles. This gives the illusion of a larger room and conveniently requires less grouting.
–Natural stone tile is less likely to go out of style.
Source: KnoxNews.com
The comment about larger tiles is so true. Often folks think that because a bathroom is small that smaller tile is required. Too many tiles and grout lines can make this smaller room too busy. Also, I find that thinner grout lines give a cleaner and more sleek look.