This place is in a great location very close to Mong Kok MRT, the ladies market and most importantly Mammy Pancake. Everything else is a short MRT journey away or a twenty minute walk so not bad at all.
There were two smallish double beds and the room itself was very small. I'm 5'9 and my feet were hanging off the edge of the bed and I think four people living on top of each other would be a bit cramped but for a few days it's absolutely fine.
I would definitely recommend this place for a short visit :)