The perfect place for the solo traveler or a couple looking to tour Hong Kong.
Why?
First of all, it's just a bus ride away to and from the airport, and a short walk away from the MTR. This makes getting to and from the airport, and going around the entirety of Hong Kong, a breeze. My girlfriend and I stayed here for four days and we never had any trouble visiting Disneyland, Ngong Ping, Central, the Peak, and all the restaurants and parks we wanted to visit (which were a lot).
Second, Ken is a great host. He was very attentive of our needs and was very helpful. He's got all the basic amenities covered. WiFi, hair dryer, TV, water heater, air conditioning, etc. You won't have to worry about bringing toiletries because he'll also provide you an endless supply of towels, soap, shampoo, etc. He's really friendly too.
Third, even though the check-in time is at 2 PM, you can check in earlier if there's a room available. If there isn't, Ken will let you leave your stuff at the guest house so that you can start touring Hong Kong! You can also leave your stuff after checking out, so that you can squeeze in some last minute shopping or whatever it is you want to do before going to the airport.
Fourth, the place is clean and comfy! Even though it's right next to one of the busiest roads in Hong Kong, we never heard any noise while we stayed in our room. Also, while the room was small, it never felt too cramped. It might feel a bit cramped for someone tall, but I'm 5'9 and I found the place to be okay for a guy my size. If you're 5'9 like me and worried the bed might be too small, don't worry. It isn't. Also, I was sharing the room with my girlfriend, our 30kg luggage, and assorted backpacks and shopping bags. The place never felt cramped for either of us. That said, it'd definitely feel cramped for a guy taller than me, say 5'10 and up. Also, I hope you don't mind taking a shower next to the toilet, because at this price point, every room you'll get in Hong Kong will have you showering next to where you dumped everything you ate last night. If that turns you off, you have to really consider upping your budget for accommodations in Hong Kong.
Fifth, while the rooms are small, the walls are made of concrete. Privacy.
Trust me. If all you need is a place to crash after spending a day touring Hong Kong, this is the place. My girlfriend and I stayed here during our four days and three nights in Hong Kong and we think Kam Mun Guest House is perfect at this price point.
Thanks Ken! I'll definitely be back when I return to Hong Kong for my hiking trip around Lantau Island!