Having stayed once before in a Campanile hotel, we knew to expect something clean and functional, which it was. Checkin was friendly and efficient. The food was good but the restaurant lacked atmosphere - and as we lingered over our meals (dinner and breakfast) the room was already being stripped of its 'restaurant' look! - which was unsettling. That (and the fact that the 'complimentary glass from the bar' can't be got because the bar is closed) rather give the lie to all the blurb about wanting to make our stay as happy and comfortable, etc, as possible...
We'd recommend it - but with those caveats.
It's located in an industrial estate some way outside Vannes so not that handy, but it's close to the main roads. We took a taxi in and the town itself is well worth seeing.