Nerea has a lovely apartment, with a nice touch of style.
Location is perfect in several respects. It is a 15 min direct, bus ride (E09) to the centre of San Sebastian (early in the morning to late at night, every 15 mins) and a longer, direct ride (E27) out to Hondarribia.
The apartment is very near to the excellent lunch time spot of Bar la lonja - fantastic fish.
And a short walk to the short ferry crossing (1 euro 10 cents) to Pasai Donibane, for bars, restaurants and a great walk out to the entrance to the estuary.
If you are catering for yourselves, there are plenty of supermarkets, grocery stores and a stunning fresh fish place all very nearby.
Nerea is a great host, plenty of suggestions of where to go and what to eat.
Unquestionably 5 stars.