If you're interested in staying in a hotel which offers you more then just a lobby and hotel rooms then L'Hermitage Gantois offers you the right historic surrounding.
Very professional welcome at the reception, and extra credits to the luggage-porter who parked our car and gave us a historic tour in the hotel while guiding us to the hotel room.
The standard room was spacious enough, potentially due to the very high ceiling in the room. The room's walls are decorated with wood.
Eur 25 to park your car for a day/night might sound expensive, but you do get a lot of service and you don't have to worry about your car.
The only more or less negative point I wanted to mention is the room maid who entered the room in the evening without knocking on the door to "uncover" the bed. Yes, it belongs to a 5* hotel service, but knocking on the door beforehand is recommended...
But this is just a minor comment, overall very much recommended hotel, and a walking distance from the Lille city centre.

I stayed here for one night between Christmas and New Year and was generally pleased by what the hotel offered. Although the location is not central, it only takes 5 minutes to walk to the heart of Lille, which is a very pleasant city indeed. I found the staff very helpful and the room was clean, if not a little 'out-dated' (when you consider the renovation of the central body of the hotel). I ate in the hotel restaurant in the evening and although the prices were 'steep', the quality of the food was excellent (although for the prices, I would have expected for an explanation of what I was eating and plates that were not chipped).
All-in-all, I would recommend this hotel, and I would certainly recommend a visit to Lille

We spend 5 nights in this Hotel, better an historic place. Have you ever had a hotel that has its origin in 1640, founded as a hospice for 13 old men? That was still a hospice until 1994 with about 200 nuns tending elderly people? A hotel with weekly a guided tour showing its places of interest, including an original small church?
But is this all enough to be a five stars Hotel?
We had a room, about 230 euro a night without breakfast, composed of three cells of the nuns: St Benoit, overlooking one of the inner courts. A bedroom with TV, a room to sit with a wardrobe, couldn’t see the TV, not very cosy, and one was bathroom, shower in the bath and toilet in the bathroom. Heating (electric) in the bathroom was ok, but in the other rooms a problem. And it was noisy. We knew when our upstairs neighbours went in the shower or bath and the seven o’clock walk of one of the personnel over the corridor waked us up.
The gastronimique restaurant we never tried, as our experiences in the Brasserie Estaminet were not very successful for the food and for the waiters. The breakfast was average, insufficient replenished in the last hour.
In one of the inner courtyards a bar was made. The roof of a modern glass construction and a perfect interior made it a very nice place to stay. The staff in the bar and at the reception were most correct and helpful. The car was taken care of and stood ready in frotn of the hotel when we left.
The hotel is situated near the Beffroi and about 5 minutes walk to the old city center.
When we go back to Lille (there is a lot to see and it has the most beautiful museums) I wonder if we would chose the Hermitage again, and if, I’ll ask for a modern room.

If you want to indulge yourself a little, be away from the UK but not too far, give serious consideration to this place