Hi Esther, my original gut reaction would be to think of uniformity. I have to think as a Realtor and tell you that for resale value, there's nothing like keeping your bathrooms and tile the same or very similar. My opinion would vary if we were talking about a powder room where you could afford to be different and make a statement using finishes from the period, funky lamps and a great vanity.
1928 Spanish Mediterranean bathroom floor tile would have normally been of a honeycomb pattern and usually black and white but in cities like Morningside and Coral Gables, you also see the colorful 4X4's
hope that helps!