HELP!

Okay, here is.
Barcelona: living in a house: boring!
Plan:
Either
1: move out in the forest. Build or find treehouse
2: buy or rent boat

So...... Have NO clue about boats
Does anybody here?

Anybody with a good tip for a "lost" gal?
:)
~ Aasa

PS: I don't give a damn about classy and speed and such.
Only roomy and livable and good price.
PS2: isn't this cool