Hotel Único Madrid is a boutique 5-star hotel situated in a renovated 19th-century palace in downtown Madrid. The hotel offers elegant and contemporary rooms and suites, each featuring a bathtub for guests to unwind and rejuvenate. The hotel also boasts a rooftop terrace, a fitness center, and a Michelin-starred restaurant. With its unique blend of history and modernity, exceptional amenities, and central location, Hotel Único Madrid is a fantastic choice for those seeking a hotel with a bathtub in downtown Madrid.