Two recommendations
The Val d'Aran is located in the central area of the Pyrenees. Aranese is the name that the Occitan language of Arán receives.
A very deep rooted custom in the valley is to celebrate “romerías” which are processions in honour of saints and festivities pertaining to the countryside and livestock. If you wish to enjoy skiing you need to go to the Baqueira-Beret ski station, and, if on the other hand, what you like is trekking in Spring, you cannot miss getting lost in the Aranese villages, their landscapes and rivers.
Lastly, two recommendations: the first, if you need lodgings, I recommend staying in Hotel Albarés, where you can enjoy the hospitality of Mercedes (the owner) and Fugi (her husband) who will welcome you as if you were a family member.