Stayed at the Carlton 2 nights over a weekend. We chose the Carlton after reviews on Tripadvisor, and weren't too disappointed.
The Hotel is in an excellent location, in the heart of Glasgow. We drove to Glasgow, so parking was a bit tricky, but we found that if you park at the Buchanan Galleries Multistorey Carpark, round the corner from the Hotel, the Carlton will stamp the ticket and you get 50% off your parking bill.
Bad bits: The entance and Hotel lobby were a bit of a disappointment, as we were expectiing something a bit more grand. Our Club room was slightly disappointing in it's size, but the hotel is in a premium location, so I guess size is a constraint.
The breakfast was ok, but we thought it had limited choice for a 4 Star.
Good Bits: The receptionist and all the staff were very pleasant and courteous. Nothing was a problem and everyone smiled. We ate at the Windows Restaurant the first night. The view is very good and the meal was excellent, but the Menu is very limited.
We found the Executive Lounge ok, and had some drinks there a couple of times, but we liked to spend our time out and about. We asked the hotel for a balcony room prior to our arrival, which they supplied us with.......excellent.
Overall, a very clean nice pleasant hotel in an excellent location, but for the money, we would probably go back to the SAS Radisson or the Menzies mainly for its ammenities(swimming/gym), bigger rooms and bigger breakfast.
Tip: If you walk out of the hotel entrance and turn right and walk 50 yards. There is a little Italian Restraunt that has tables outside on the main shopping thoroughfare. We sat there for a couple of hours and People Watched, whilst drinking and eating some Italian nibbles...excellent.