The cabanas are located in the CX Wing F Lounge.
They're nice havens to some degree, but in a sense it's just a big bathroom. It's linked by a tranquil "river" (so make sure you're not making a huge racket, otherwise the residents of the other cabanas will be able to hear you).
There's a decent shower, basin, decent sized bath tub, small cupboard (with a bathrobe IIRC), a recliner and a lie down area (rubber mattress). Practically, the recliner is OK to lie in, but the rubber mattress is just hard as heck unless you prefer to sleep on a bed as hard as a rock (seems to be the "norm" in HKG). I guess you could make it softer by asking for extra towels. I didn't know you could ask for a pillow (you can ask for a whole range of bathroom accessories - just use the cue card left next to the basin in the cabana).
As for the day rooms in the CX Pier F Lounge, they aren't all that special. Just a lounge chair with ottoman with a TV. You can order service into the room - not sure what you can order (I simply asked for drinks). There isn't even an office table and chair so you can actually do some decent work (cf. the private work suites in the QF F Lounges).
For those that need connectivity and work on the go, both the cabanas and day rooms do have power sockets and access to the wifi network. (For the cabanas, as much as it is unusual to use a computer in a bathroom, you will need to get low to the ground to access the power sockets).
Here are some pics. From the CX Wing F Lounge cabanas:
Looking into the cabana from the entrance. To your left are the toilet, shower then basin. To your right is the cupboard then bath. Out the door on the other end is the recliner and bed.
The river which connects the cabanas. Don't try walking in it, or you may get charged for being a pervert. And unless you want to be the noisy neighbour, refrain from making a racket.
The recliner in the cabana; it is also lined with the same rubber mattress that constitutes the bed. It is hard on the back.
And from the CX Pier F Lounge day rooms:
Chair and ottoman. You can also see the control panel which controls lighting, the TV and the service call button. The wall inset is for your little trinkets - drinks, snacks, etc.
Another view of the chair. It's a pretty low lying one; leather material, I think. Comfy-ish.
The main menu control panel for the day room
