A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,413
IIRC AmEx PTS/CTS can book private car service in many locations around the world. They're not the cheapest, but IMO they use very good providers.
IIRC regular taxi rate is a bit over fifty Euro and should be easy and decent.