This was an absolutely amazing experience! The apartment is stunningly beautiful and extremely clean. Towels are soft, beds very comfy, wifi, washing machine, dishwasher, etc.
Guillermo and his wife Paz went above and beyond during our stay. They took uf for a ride on their boat one afternoon, helped arrange takeout one night when we were too tired to eat out, and even helped me sort out a banking issue.
Guillermo always responded promptly- within minutes, to any issue or question I had. The train is literally a 1-min walk away and we rode it several times to and from neighboring Mundaka.
I could not give a stronger recommendation for staying at Guillermo's place.