We now have a 24" TV in the outside compartment, 32" in the bedroom cab over and 40" over the fireplace in the living/dining room. This quite a change from our Arctic Fox which had single 22" that swiveled between bed and dinette viewing.
We don't subscribe to cable or satellite broadcasting. If we don't pick up over-the-air programming, we have a collection of movies from which to choose.
As others have posted, our Arctic Fox required both people sit on the same side of the dinette to watch TV. I really didn't mind the closeness, but better seating position would have gone a long way in comfort. Sometimes it was just easier to watch TV in bed.
If you are running the air conditioner, you may find the TV audio will be drowned out in white noise. Look for a way to patch that audio back to the sound system in the camper so the speakers are closer to you - You may not even need to run the volume louder, but it will be much clear at all levels.