Well thanks to Europcar and Avis, the options have been broadened. New list includes:

Audi
A1
A3
A4

Peugeot
2008

Seat
Ibiza/Wagon

Opel
Astra

Mercedes
A-class
C-class

I'm really leaning towards the A-class mercedes as it seems like a cool small hatch and I've never seen a A-class before. Thoughts? Booking the vehicles this weekend at latest.