Hi mate, We done Spa last year, and also stayed at Spa D'or, Cant compare to another campsite but it was clean tidy and all the staff were great, We hired one of the mobile homes that slept 4 (wasn't the basic one but the one up from that) Which was fully equipped with everything we needed, activities and entertainment weren't our cup of tea (wasn't lively enough!) if your wanting the F1 weekend accommodation at a reasonable price (and not wanting a hotel) then can't recommend this more.
If you turn right out of the campsite, do a left and follow the road down theres a supermarket (about 5 minutes away) we went there and stocked up on all necessities and bumped into Graeme Lowdon and John Booth from Marussia and Martin Whitmarsh from McLaren - I think all the teams go there for bits and pieces so may be worth a visit on the thursday night as you never know who you'll bump into!!
Also theres a cracking restaurant called
L'Auberge du Lac - Not the cheapest but I don't think you'll ever have a fillet steak like it! Deffo try it for the "lets go out somewhere nice' kind of night! Other than that, If you go in the centre of Spa there are loads of pubs, bars and restaurants which again we bumped in to the Marussia Guys as they were having a few jars, also bumped into all the Sky F1 team and Mark Webber!
As far as the F1 went, take some decent footwear as there is a lot of walking in spa, travel light, take a rucksack with a rain coat and deffo take an umbrella, if your doing GA (which I'd recommend you don't!) and are thinking of taking a chair then pack a garden trowel as the banks are very steep and uneven! and you'll be able to level your chair!
Please take this as information in... Stay well away from General Admission tickets, the only decent area to watch from is Pouhon, Malmedy and the Kemmel Straight, which are right at the far end of the track and not all that! also you will not be able to get anywhere near Le Source or Eau Rouge as the security is ridiculous and they are the places you need to witness an F1 car gong through! We searched every where and everyone said GA was awesome at Spa but it really isn't!
Here is the official
link for the F1 tickets, and if you order now the tickets are still discounted!
Hope this helps!!