The TRMME conference dinner will take place in the basque gastronomical society Cofradía Vasca de Gastronomía located on the hillside of Monte Urgull (marked by an orange star in the maps) overlooking Plaza Trinidad in Parte Vieja (Old Town) of San Sebastián.
You reach the society by ascending the narrow pathway to the west of Iglesia de Santa Maria (see orange path highlighted in the maps).