Just done two nights here to satisfy an accelerate challenge and a Quidco offer (currently 15% cashback).
Pleasantly surprised, my exec king was upgraded to a penthouse suite, a 5th floor room with skylights, accessed via a staircase from 4th floor.
Dined in the Bon Auberge both nights and on first night was given a loyalty card which gives a 10% discount!
Also on the IHG app was an offer for 1000 points for dining in the restaurant.
Food was very nice on both nights.
Breakfast also in the Bon Auberge is £10 when booked in advance.
They now have a deal with the car park over the road which slightly reduces the cost, charged £9.60 for a 17:00 arrival and 10:00 departure.
I imagine that the profusion of offers is probably related to the nearby Doubletree's arrival on the scene, but with a 3 night run in Glasgow I'm happy to mix it up a bit!