I agree with the others that tiles make a lousy counter top surface. But they can make a nice backsplash. The pic below is a boat I owned years ago. I put the series of 4 tiles in the surface above and behind the sink. The countertops were ash and teak with about 3 coats of clear epoxy followed by 4 coats of Epifanes varnish. It looked good but I wouldn't want to do it again - you have to be careful with everything so you don't mar the surface. On the other hand the counters are more than 15 years old in this picture. Laminate (Formica or Arborite) in a mat finish is probably the best solution and the easiest to care for.
Living aboard in Victoria Harbour