Finding a quiet boutique in a big city might seem like a challenge, but in reality, some of our most intimate stays are tucked into the corners of the world's largest metropolises. Offering personalized service and charming details, these petite hotels -- most with less than 20 rooms -- are some of our favorites. So though mega-metropolises such as Buenos Aires, Hong Kong, and Los Angeles might intimidate you, fear not. You can always retreat to these intimate boutiques for some quiet time amidst the bustle of the big city. This charming, upscale boutique in Buenos Aires feels like a private home, with 11 beautiful, individually decorated rooms featuring hardwood floors, comfortable beds, and great amenities. Each room has been dedicated to a significant figure in Argentine history -- such as Evita Peron, Che Guevara, General San Martin and Mafalda -- and has themed decor to match. The cozy library is the perfect place to unwind after a long day of sightseeing in the winter, and in the warmer months guests can head up to the rooftop deck, complete with a six-person whirlpool and lounge chairs.