The Grand Duchy lies just few kilometres east. Paris, Brussels and Luxembourg all have airports within easy reach. A car is needed to get around the countryside. Roads are good but public transportation is rare. Pack walking boots to get the most out of the region.
Winter can easily dip below freezing and can offer enough snow for cross-country skiing.
Spring is notoriously fickle. They can also be frustratingly wet and chilly. Go this year, and you can still juggle the different coins of France, Belgium and Luxembourg, Germany and the Netherlands. The fine Alsatian wines are not included. The restaurant is a walk across the park.