The only reason to stay in Turbot is because your catching the morning boat to Capurgaña. This hostel is right in front of the wharf, has basic rooms with tv but no separate bathroom, just a curtain!
The owner Jhon, is super-nice, offering coffee, and answering any questions (in Spanish). If you don't want to take all your bags on the boat (anything over 10kg on the boat incurs a fee), he's happy to keep them until you get back. He did say there was a charge for storage, but when I came back after 15 days he told me not to worry about it.
Definitely, definitely stay here.