Take the dorm bed if you're travelling alone and the point of the trip is the people. Four beds is not a hostel dorm. It is a small room of strangers who are on first-name terms by the second breakfast. It's also the cheapest way to string together consecutive surf mornings, which is what actually makes you better.
Take an A/C Double if you're two people, or one person who wants a door that shuts. Private bathroom, breakfast included, and the same walk to the water as everyone else.
Take the A/C Deluxe if you want the quiet side of the house and a heavier curtain for the mornings you've earned a lie-in. There are only 2 of them and they go first.
Between them the 5 private rooms and the 4-bed dorm come to 14 beds. Groups do take the whole house, for that, talk to us rather than booking room by room.