I stayed at Luis' idyllic apartment for two weeks and loved it. The apartment is on the basic side but very clean and has everything you need inc wifi. Exactly what I was looking for. It has private access onto a quiet little beach surrounded by only a handful of other houses and a great beach cafe. Compared to other towns and villages on the north coast I felt this was the the nicest one we saw, everyone was very friendly, it's very quiet and clean. It is also in a great location for all the surfing beaches and hot springs.
Luis himself was extremely welcoming picking us up from the airport and showing us the route to the house which could be tricky in the dark. He also sorted a problem with the toilet within hours which I was very impressed by.
The only downside was a noisy neighbour who was doing building work everyday, all day to his house. He turned out to be very nice, just unfortunate timing.
I'm already planning to come back and stay at the house, thanks Luis!