Etihad offers my favorite first class in the world onboard their Airbus A380 — the “First Apartment.” There are two apartments across the cabin with a single aisle between them upstairs on the A380, in contrast on the same plane Emirates — known as one of the world’s best airlines for first class — has four suites across.
Etihad First Apartment — Single Aisle
There’s an onboard shower, an onboard chef (generally a flight attendant with real restaurant kitchen experience who can customize your meals as you wish), solid internet and good amenities.