1. Excellent, friendly greeting on arrival. 2. The location for a first-time visitor to Lille could hardly have been better. 3. Room was comfy and clean and had very witty and colourful murals, even on the shower screen! 4. Enjoyed the access to the balcony attached to the room

I was unhappy that my credit card had been debited for a sum of £158.13 with no explanation. I only saw this on my return home when I checked my bank statement. I called the hotel reception who tried to be helpful and provided some explanation. Then mysteriously, the originally debited amount morphed into £75, but still showed as a payment to the Mercure. Maybe this will be resolved, but it was an unsatisfactory postscript to a nice stay. One other thing was that we thought that the price for breakfast as excessive - better value could be had at nearby cafes.

Breakfast was average. Personally I dislike the use of coffee capsules in hotels which are committed to recycling. Proper cups / mugs preferred to glass cups

We had a room with a communicating door which we dislike. Past experiences have deterred us from this arrangement. We were moved to room 209 as nothing else available on the Friday. I was shocked that a 4 star hotel would have such a room. We were moved to an acceptable room for the Saturday and Sunday

The staff was wonderful; very helpful; accommodating and knowledgeable. The rooms were comfortable and I would have liked another pillow but overall just fine.

It was a very nice hotel and I would have to be truly grumpy to come up with complaints. Lille was a mess with construction (roads, etc.) and it made getting around interesting.

My room was on the 5th floor and very quiet. It was a lovely bright room and quiet. The staff were lovely and helpful and friendly and they allowed me to check-in as soon as I arrived at 1pm. The hotel is just behind the Opera and close to the Grand Place etc.

The room layout was odd and the bathroom door was very close to the bed when you opened it. The bed was large and clean but not very comfortable.

The location was excellent. The staff were very helpful and accommodating. The building has an impressive exterior and entrance foyer.

The room was very comfortable and clean but could do with a face-lift.

Breakfast was delicious & in a lovely setting. Lots of choice, lots of fruits, meats etc.

Room was looking a little tired, esp the wrought iron railings on the juliette balcony.

Room had a great view! As a corner room the bathroom was quite large too. Fridge!! Staff friendly, breakfast more than adequate.

Nothing. All was good (we are a return visitor)

The check in guy was incredibly friendly, informative and very helpful.

nice entrance area - close to cheap parking and centre of town- very clean.

nothing although at breakfast the coffee machine difficult to use and ended up helping other guests to use it.

location, staff

room was a funny shape - probably due to the shape of the building; toilet and shower/wash basin were remote from each other meaning we had to walk from one side of the room past the bed to wash our hands.