Liz,
We got tile in this motorhome and I really like it. It goes all the way from the front door to the bedroom. No more carpet cleaning!
I would comment on two things, however. First, we would recommend the narrowest grouting. Ours was supposed to have been narrow but they laid it with 1/4 inch grout and, by the time we saw photos, the cabinets had been put in and it was too late to change without great expense and hassle. Second, be sure the grout is well sealed
immediately. Most RV mfgrs. do not seal the grout; it's up to the purchaser to do it. Our deal with Monaco - to make up for their mistake - was their promise to seal the grout extra well with a good quality sealer. They did as promised and it's been wonderful. I've had spills, grease, and even tar that came up immediately without any stains (can't say the same for the grout in our house which was poorly done). The way to tell if the grout is properly sealed is to pour a little water on the grout. If the water "beads" then it's a good job. If it doesn't bead and soaks in, it's not done properly and you will get stains. After almost five years and 30,000 miles of bouncing down highways, we're beginning to notice a few places where the grout and tile are separating, but they aren't very noticeable unless you're looking for them. It's not like there are unsightly cracks across the grout, just loosening parallel to the tile lines. Also, Pamela advised me to put a rug in front of the refrigerator in case anything falls out after driving. I did that so there have not been any problems with cracked tiles which worried me initially.
We also would recommend porcelain because it's the same color all the way through. If you do happen to get a gouge or crack it won't be as noticeable. If you get regular tile the color is on the surface and a chip might show up as white when you have a colored tile.
ArdraF