As its name suggests, this boutique hotel is one of a kind, from its cobalt-blue façade to its vividly coloured public areas and rooms incorporating fairy-tale themes, such as Alice in Wonderland motifs. On the top floor of the Hausmannian building, single rooms are tiny at 10 sq metres but have the best views; doubles start at 16 sq metres.
It's brilliantly located on the eastern edge of Le Marais, just footsteps from Bastille's twice-weekly street market.