Port de la Selva is about 8km away from Llanca. You can take a bus there for 1.65 euros one way. You can find the bus schedule at the bus stop (very close to the beach). And Figueres, where Dali Salvador was born is also just a bus away – 4.65 euros one way (about 30-40 mins). The bus schedule is pretty tight better if you could mentally plan your trips to these towns one day earlier to avoid rushing through your showers or running for the bus (believe me, this town maybe small but, the uphills and downhills are enough to kill you).
During winter, most shops are closed but, there are some shops that will be opened from 10am-5pm. If you have any questions to ask about this pretty little town, feel free to ask me. Be more than glad to help!