I cannot imagine that there is a place in Hondarribia /Irun I that is better than Mar's place. Majestic looks into the town up to the beaches you feel like a king/queen. With the elevator right next to the door you are quickly up (8th floor) or down. All major bus routes, including those to San Sebastián, stop right outside the door. There is no street noise due to the height of the apartment.
The spacious apartment with many paintings on the walls reminds me of Spanish films. Mar is a very nice host who can tell you a lot about the history and present of the city if you want.