Within an eclectic 19th-century palace, Mystery Hotel spins a tale of secret doors and velvet nights. Start with breakfast in the Great Hall, then retreat to rooms with Nespresso, smart TVs, and individually controlled A/C. The in-house spa slows time with tranquil treatments, while the Opera and Basilica beckon for an evening stroll. It’s a 5-star stay with a playful, aristocratic wink.