Thickness of tiles may be an issue. The irregular thickness of the Mexican Saltillo often dictates a mud base for setting. The Saltillo has to be sealed or the first French fry that hits the floor will leave a grease mark that will not come out. IMO the wide groutlines and thickness of the Saltillo is a deal breaker for me. I think you can find a porcelain or ceramic simulated terra cotta tile which will have fewer issues.

I do have arto brick in a small area in my house. I love it, because I love the aesthetic. But, I'm sure glad I didn't put it in the kitchen, oh my goodness.

Here's what you should know:

1. the colors I saw vs. the colors that came were....let's just say, not exact. There were a couple attempts to get it right. It took a LONG time. They are custom orders and it took weeks and weeks. (But that was a few years ago, maybe they are quicker nowadays).

2. it is thick. So, our very professional installers worked with it to slope the engineered wood floor (all installed at same time) up to meet it. It's gradual and very subtle; no one would notice. But I do believe that many installers would be challenged by that. Also, if you're butting it up against an existing floor, it may be too thick and you would need an unsightly bi-level transition strip, or some other solution. So thickness of my tiles was an issue (surmountable).

3. Our installers and the retailer recommend 511 sealer. There are different kinds--I can't recall which one, but it's not a surface sealer (no "coating" on top). It sinks in, and renders the tile more resistant to staining. I am able to get stains up, but even though it's a 20 year sealer, you still need to do it every so often (1, 2, 3 years, or so). I still haven't re-sealed, but it needs it now.

4. The grout lines are necessarily thick. It's a rustic look, and I love it, but cleaning is not much fun.

Lastly, I'll mention that we put large format rectified limestone in the kitchen. It is also, imho, rustic and natural looking. I love it, too, and the grout lines are teeny. It always looks clean, and much easier to maintain. So if I had to do it over again, I'd do the more uniform, larger tiles in both areas, and only have minimal grout.

ortochini, what did you end up doing? I am considering all of the same materials for my outdoor patio.

Kharten after a crazy amount of time doing research I ended up buying terracotta. I am really happy with my decision. The terracotta I found is made in China and we had to wait for a container to arrive but it was worth it. It is thick, no to polished and a little rustic. But a lot more solid than saltillo. They have different shapes and sizes.
I bought it here.

https://rockmillstone.com/terracotta-and-ceramic/terracotta/old-castillo-terracotta/

Here are pictures of my interior staircase and central patio. Same old castillo terracotta but different sizes.

Wow, that is beautiful. Do you remember what the cost per square feet was for the material? And are you in the L.A. area? If so, may I have the name of your installers (if you were happy with them)?

No idea how much it was. We did a big Spanish house restoration and this was just one of many other expenses.. but I remember it not being as inexpensive as saltillo or as expensive as Arto.
I am in Pasadena. Don’t have the info about my installers. The contractor hired them. If you are doing a big remodel your contract should have someone that can do it. As I said for an installer my material was a nightmare... but I am super happy with it.

I saw that you asked on another post about the issue with a curved stair riser. Look at my pictures I have a curved stair-riser and it was not an issue.

Beautiful! Are the tiles sealed? We are in Florida remodeling a 1930's Spanish home, and would love to use these outdoors on our patio. How have the tiles held up of the past year?

Additionally, your patio furniture is lovely, do you have the details to share?