Our builder similarly stuck the fireplace dead center in the wall where you might want the TV. This is Houston, where you'd have to be insane to use a fireplace, so I initially just got a small TV stand and completely covered the fireplace with the TV.

My wife was not amused.

Much painful home renovation later, we no longer have a fireplace whatsoever in our house, and instead have a nice home theater cabinet (custom made, etc.) where the TV simply sits on top and all the cabling happens behind it through some cutouts and hidden cable runs.

(Best part of doing this: my front left/center/right speakers are all the same exact speaker model, all standing vertically. Sound is pretty good.)