I have used wood look tile in my kitchen in an unconvetional way. I laid it along the back wall of cabinets that contains the water line to the fridge. I will do the same under the cabinet run that holds the sink and dishwasher. It is a great color match to the hardwood I will use in the visible areas, although the ”planks” are thicker.

I don’t like standing on tile, it’s hard on my knees and lower back and I’m young and healthy. I can’t imagine how it would feel 20 years from now, but it’s not a surface I can grow old with. I used tile instead of having hardwood laid under those cabinets because I am more concerned about what slow, hard to detect water leaks can do to a floor over time than I am with the durability of hardwood in the visible areas.

That’s me. You want to use the tile in the kitchen and bath - I think the bathroom might be a bit much. The advice I would give you is to lay it like wood, not like tile, with random tile joints (top image). So if you cut a piece, start your next row with the cut remnant and tile from there, otherwise you will end up with regularly spaced grout joints that make it look more like tile than wood (bottom image). Use the smallest recommended tile joint for your tile, and use a matching grout color.

Real hardwood and “wood look” tile juxtaposed, will make the tile’s “wood look” look really fake. I have had hardwood in my kitchen for almost 40 years, and it’s been great. I find tile flooring in living areas to be very hard on the knees and back. I do have tile in the bathrooms. I also think wood look tile is dated, but that’s just my opinion.

The problem is probably the color and width of your existing hardwood floors. It's difficult to think of replacing them to what is currently one of the popular choices.

I would not mix real wood floors (site finished or engineered) with wood-look tile. You will not find a tile that is a good match to your existing wood floors.

I did mix wood-look tile and wood stairs in a previous house. This was a guest house used for entertaining and we had kids/teens, so tile was the best flooring option. We then had the wood floor guy choose the best stain mix to match the wood stair treads to the tile.

If you're going to do tile, do tile. Not a wood wannabe. Nothing wrong with a wood-look tile but it won't look good next to real wood. Get something that contrasts with the hardwood rather than trying to mimic it, for an intentional look. I tend to like slate/charcoal color next to hardwood.