The Pierre even offers a pet food-centered room service menu.

FORBES: From Pet Spas To Digital Brokerages, The Most Unusual Housing Trends To Track In 2013

The swans are still there, but the 103 rooms now have interiors designed by Alexander Champalimaud, a La Prairie spa and a restaurant by Wolfgang Puck, who also created the room service menu.

BBC: Openings: Los Angeles, Florence and Qatar

The Four Seasons Resort Bora Bora is planning to unveil a "Romance" room-service menu in August that will feature a couples' photo session.

WSJ: Don't Forget to Pack a Photographer

The accommodations, located adjacent to the resort's spa, will also get healthier minibar snacks and room-service menu items, says Tom Voss, the resort's president.

WSJ: The Ultimate Spa Treatment: Privacy

But they also have exclusive in-house amenities, such as a private lobby desk and concierge staff, with escorted in-room iPad registration, one of the best upgrades you can get in a city where main lobby registration, even at top hotels, often resembles the economy class check-in line at JFK. The 24-hour room service features the first-ever in-room dining menu designed by the man himself, culinary legend Nobu Matsuhisa.

FORBES: Nobu Hotel Las Vegas: Famed Chef & Robert DeNiro Cook Up Luxury Lodging

They didn't have a lot of services -- limited restaurant menu, no bellman, no room service, no parking attendants -- but it was a low price for a great room.

CNN: Marriott mogul on 55 years of change in the hotel business

In Hollywood's ever-escalating luxury hotel arms race, guests no longer have to settle for standard room service, unceremoniously prepared by hotel staff from a boilerplate menu.

BBC: A-list room service in Hollywood

Dinners in the smart onboard restaurant have an unmistakably outback flavour, with kangaroo fillet on the menu, while Platinum Service passengers can order 24-hour room service and breakfast in bed.

BBC: Five unforgettable rail journeys