Linked to the title of this thread, some people do this and buy a house in Portugal directly, but others simply move there for 6 months to withdraw and buy the house in Spain. Here, as long as you paid your taxes, you can also buy the house with Bitcoin (a colleague from the Spanish board did it).
Yeah, they should more or less follow the same rules.
From there, you can do things with Bitcoin, what may change later is the taxes and the procedural form.