[JMBroad]

Very brief check:

Looks like a nice development - very small village so check access routes if that is something likely to concern you. (aka dirt roads vs tarmac)

Norwegian builders with a Brazilian partner - several sites promoting the development mention that payments should be made to a norwegian bank account. (read the posts about your investment money having to go through the Banco Central if you are thinking about repatriation of funds)

Apart from that nothing glaring but as I said this was only a very basic search (searching in Portuguese can often bring to light many interesting articles which aren't translated into other languages).

Assuming you can cover all of the above (that you aren't paying the money into a Norwegian bank account) and are happy with the access roads, just make sure you get a competent lawyer to represent you in the purchase.

Manzanares seem to have been used by quite a few buyers on these forums who (appear) content with their services, but ask around.