I second the points Bulletpoint makes - the mapping in this campaign is suggestive of the real world locations, but that's it, especially with regards to how villages and urban landscapes are depicted. I'm 3 missions in and all the maps so far have been a bit odd for me, mainly because they don't look like European towns/villages from that area and I'm used to CM maps having a high fidelity, that being one of the attractions of the series. There are many multi-story townhouse type buildings, for example, which you don't have there, and didn't have back then either as far as I can make out (I live near and have visited quite a few times). Some areas have been 'compressed'. The villages look like much larger towns should look, I think.
The campaign itself, and the missions, are enjoyable and challenging with a cool force mix. So - thought of as a free campaign (as someone said above), yes, it's fun.