Call me an untrusting person, but I'd be cautious.
there's a link on the signature of the o/p to a website
Tenerife agent, property, rentals, sales where the registration details are anything but clear, being the same as the registration agent - equally hidden. No 'about us' or other information about with whom you are dealing.
The photo of a property on the site is so obviously American and that raises the hackles, as the site is apparently meant to be Tenerife-specific.