From Can Marisch, and due to its good situation, you will be able to enjoy the Empordà and do lots of activities.
The nearest and most interesting is the “Gorgs de Ventalló” (less than 1km away), which has some fresh water lakes coming from the Fluvià river, where you can bathe and do other sporting activities.
The Empordà, in general, offers you lots of options to enjoy your stay.