Today is yours to use as you wish. No need to plan things in, just take it as it comes and see what you're in the mood for this morning. You have two cars, so if you want to split up and head off in different directions, you can do just that.
One option is simply to slow down. Your hotel has lots of space to spread out, swim, play games, read a book and just hang out together in the middle of the mountains.
If you want to get back into your boots, there is always more of the Pyrenees to explore. Typically, trailheads are a 30-45 minute drive from your hotel. Though of course, the landscapes are nearly always dramatic, so the passengers should enjoy the ride even if the driver is paying attention to the road!
Where the Ordesa Valley is off to the western side of the park, the three other valleys are all on the east and much more accessible from Aínsa. Pineta is the national park's other grand glacial valley, but has a road all the way along so you can enjoy a scenic drive punctuated by short walks. The lesser-known Chistau, also known as Gistain, retains strong rural traditions and they have their own dialect. For something more challenging, you can hike into the Añisclo gorge.
Don't worry, we'll provide all the guidance you need should you choose to head out hiking again. Equally, if you want more activity, then we can always add some more watery fun to proceedings - just let me know.