If you hold nakedtime sessions indoors, obviously, you're going to want to consider whether you have surfaces or carpeting you don't want soiled under any circumstances. It'll be best to stay out of these areas at least until you get a feel for how receptive your child will be to this potty-training technique and how quickly she'll pick it up.
If your bathroom and kitchen are close together, you could probably figure out inventive ways to corral her during the nakedtime sessions. Be sure to take another look at how secure the babyproofing is in these tiled surface areas, because having to call Poison Control will put a serious dent in the potty training. Another option for indoor nakedtime is to simply extend bath time, perhaps as long as an hour so that it's more likely she'll need to go.