CDG has 4 paralel runways: 2 on the north,2 on the south. The terminal 2, the Sheraton and the TGV train station are exactly between the 2 pairs.
I am not sure you can open the windows. So it may be difficult to make good picture. But the view can bez great.
Ecoute les orgues, Elles jouent pour toi...C'est le requiem pour un con
The Sofitel CDG Airport is by far the best Hotel to spot. As long as you request a room in the upper floors.
You have a view on most taxiways, CDG T2-T1.
And you're not far away of one of the most popular spot of the airport.