I stayed at the Mercure near the central train station several years ago, through an American Express trip.
Mercure is a European chain, and the room was the most "American" I've encountered in Europe: big bed, big room etc.
The breakfast, which was included, was outstanding! That I remember it several years later is a good sign! Smoked salmon, lots of fresh breads, jams, etc. Generous & varied buffet.
I don't recall the price--I probably used an AMEX voucher--but I expect it was mid to upper range.
JP