Why it's here: Even though Etihad has had a rough few months financially, the airline's luxury service remains top notch. At the top of the hill is The Residence, Etihad's 125 square foot flying luxury home found onboard its fleet of Airbus A380s. The Residence features a living room, a double bed, a private shower, and the services a personal butler. The Apartment is Etihad's less extravagant first class suite. It delivers "just" 45 square feet of private space. Those traveling on board The Apartment will also get access to Etihad's in-flight showers and luxury lounge.