Brussels, Belgium
NH Brussels Bloom is a unique art-themed hotel conveniently situated in the lively Botanique area of the city. Decorated with work by artists from all over the world, this creative, contemporary setting is a destination in itself. Just 15 minutes from Brussels Airport and Brussels North station, it's also close to public transport, and a 15-minute walk from the historic city center.
https://www.nh-hotels.com/hotel/nh-brussels-bloom
The best way to get to Brussels from London, Paris, Amsterdam, Cologne,... is by train. The closest airport is Brussels Airport, which is 15 minutes by train, or Brussels South Charleroi, which is half an hour by train.