The standard Global crew rest is a lie flat seat in a cubicle where light is controlled. The only area for debate is whether it is sufficiently isolated to qualify as Class 1.
As it has a certified ‘acoustic screen’ between it and the galley, isolating it from the crew and passengers, it qualifies as Class 1.
Even a conservative operator can qualify it as class 2. Yes it’s not in the same league as the Boeing 777 crew rest area for example but it provides a perfectly adequate sleeping space.