I suggest you create a new "blog permalink" for all post we will publish.
Now we have next case:
- tour permalink: "viajes" for "https://miwebsite/viajes/"
- hotel permalink: "hotels" for "https://miwebsite/hotels/"
In this case I only have with permalink for our post next structure "https://miwebsite/%postname%/", and this is not the best structure for the post. I want to set up our post like "https://miwebsite/blog/%postname%/" but now we can do it.
If I do set up with permalink "blog" or our post, then it is automatically changing the travel permalink to "https://miwebsite/blog/viajes/" or "https://miwebsite/blog/hotels/" for example.
My suggestion is that you set up option for "blog permalink" throught Option Themes.