Overall the stay in Mong Kok was fine. Clean place, and Mr. Ying was easy to contact for check-in. Best was the location within the city - easy access to the metro, some shopping, etc. The building and apartment are standard for HK. Travelers cannot expect a 4-star hotel stay because that is not possible in a HK apartment hi-rise. Get out and see the city. Highest recommendation is to go for a long hike in the mountains outside Diamond Hill, if you can find someone to guide you. You will think you're in another world.