Can't help with Lille, but would like to offer this advice. The aire at Bruges is NOT value for money. At this time of year it costs 15 euros for 24 hrs. The vans are packed in like sardines. (The guy in the van next door to us kept dipping his bread in our gravy, we were that close.)
The electricity supply is poor, don't expect to run your heating at a rate/level that will keep you cosy. Definitely, don't try and boil an electric kettle, use the toaster or micro wave, you will constantly be going out to re-set the trip switch.
The noise from the ring road isn't too bad most of the time, but at peak periods, i.e. early morning and evening rush hour, it is annoying. However, the traffic is not as annoying as the coaches that park up in the coach park right next door. They just love warming up their engines at all hours (day and night) and they are noisy!
We moved after the first night to Camping Memling, only 5 Euros more for full facilities and a convenient bus service into the centre of town or a 30 minute easy walk.
By the way Ypers was great as well and not too far away, fantastic town.
regards
Kath