I have to agree slightly with the last reviewer regarding the directions and the address given. However, we knew the location, having passed it on previous trips. Just on the N10, but set back far enough off the road to allow you to sleep with the windows open, yet not have excessive traffic noise.
It was a former Baladins Hotel, and is really more cheap and cheerful. €59 a night for a average sized room. The double sized power shower room was very good and the bedroom was spotless, tea, coffee and biscuits were provided. Free wifi/tv and staff very helpful.
Downside is that there is no proper restaurant. Breakfast was very, very good,( €7.50) but they rely on the restaurant next door for your evening meal. This is not a problem, except it does not open Sunday evening.
We use it now travelling to the South, (just beyond Bordeaux), and its distance from Calais is perfect for us, splitting the journey into two.