Last night on Room to Improve, architect Dermot Bannon transformed the Donegal home of Daniel O'Donnell and his wife Majella. Check out the before and after snaps in our gallery above.

Always a fan of light and big windows, Dermot impressed his clients with an enlarged double height south-facing window. 

 Big Window
Daniel and Majella's new window

However, they were not so taken with his vision of wooden floors and a huge exterior floating deck.

It wasn't all bad news though, as the trio found time to have a mini road trip belting out some classic tunes along the way. Click here to watch Dermot's Donegal Duet.

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Watch Room to Improve every Sunday on RTÉ One at 9.30pm.