I have 2 rectangular bathroom that are buing built in a wet room style (curbless open shower, drain in blue with all edges sloping towards it, see below). It was already properly sloped and now we were trying to find some small tiles (like 15x15cm or 20x20cm) so that the slope is properly mantained.
So far no luck, I could only find solid color 'pool tiles' in this size, anything "pretty" is in a large format (50x50cm upwards) which would have lots of cuts to follow the slope. Even 30x30cm with minimum cuts would look strange (see below simulation).
Is it ok to use the 'pool tiles'? I don't know if they are ok for bathroom floors and how much slippery they will be.