Small hex tiles or penny rounds are good because the grout between them provides traction.

I remodeled and replaced my larger tiles with marble basket weave tile for the bathroom and shower floors - same tile. Because of the grout, my feet feel super secure and the floor is beautiful.

I am not finding maintenance to be an issue as the tiles are a good quality and my bathroom was properly constructed. I don't have people abusing the rooms so that isn't an issue either. 😂

I just put down a gray slate-look porcelain tile that has some texture (so it's not smooth and slippery) in my master bath. But I agree with the other posters who say that small tiles with a lot of grout also are a good choice. However, I don't know if you want to be down on your hands and knees cleaning grout when you're older. So don't use a light colored grout. :-)

Any matte finish porcelain tile,, any size is fine. Or a small mosaic tile the GROUT makes it very non slip, Get a cleaning lady. : )

I love the idea of hex tiles or basket weave. I love penny rounds, but be sure you get the top installer -- as we've seen over and over, penny rounds are hard to install well.

Regardless, these smaller floor tiles will give you the "grip" you desire.

My basket weave marble tiles have been installed (and in use) for almost three years with no particular maintenance problems or grout issues.

My grout is kind of a light gray color that blends in with the Calacatta tile. I have dropped a few things on it and can't see any discoloration - if there is any, it just blends in with the grout.

As I stated in my original post, I take reasonable precautions as I only keep cleaning stuff that is safe for marble (as well as my Toto toilet). My shower floor drains really well as I can literally see where it slopes around the drain and I have a great fan so that my bathroom isn't moist. My Panasonic Whisper fan turns on and off based on ambient humidity levels.