Nice flat - clean and with everything you may need. Close to shops, parks, the sea and public transport. We stayed here for three weeks (were visiting family) with two children and did not miss anything. Itxaso was always happy to assist with any doubts.
The only minor drawback was a lack of a lift. It is a first floor so not an issue at all for the majority of guests, but you might want to know if traveling with a pram :)