This used to be one of the top hotels in China (there are photos in the lobby of when president Nixon stayed here) but China evolved, the tiny fishing village of Shenzhen became one the wealthiest cities in the world, and the business center full of modern high end hotels is now many miles from this spot which is next to the railway station to Hong Kong. But it is still a nice hotel and convenient for Hong Kong travelers to get more or less 4 star service at 3 star prices and I enjoyed my 2 week stay.
As many reviews note there is a large shopping center with mostly cheap stuff and restaurants 5 minutes away in the railway station. There are some small shops nearby that sell groceries and you can get an excellent selection of drinks, tropical fruits etc. Banks etc., and one of the world's most amazing rows of huge high end shops (Rolex, Prada etc etc) are about 10 minutes away by taxi, Uber etc. but the prices for luxuries (and almost everything) are significantly lower in Hong Kong, and nearly everywhere in the world for that matter.
I found the food good, but I am not fussy, and as noted by others the very expensive restaurant in the hotel is not worth the money, and there are many within walking distance. The standard room was small but adequate, with a nice view and of average 3 star cleanliness and décor, was considered 5 star 30 years ago. Pool was fine provided you avoid the times when its full of kids which I was able to check from my room. As others have noted the gym is a disgrace with limited equipment, much of which is nonfunctional, but you can manage a workout if you are flexible about what you do.
Internet was variable but as in the whole Shenzhen area there is direct access to Hong Kong servers so you can get your email from Yahoo, google etc and access any site without being blocked or slowed down deliberately by the Chinese firewall, as in the rest of China. Yes you may be able to use a VPN, but China has by far the largest corps of government paid hackers in the world, and they constantly block new VPN sites.
As nearly always everywhere I go, I found the staff polite and eager to please, but am patient and always respectful so I get that back, contrary to many travelers. They arranged a minibus for me and several others to the Hong Kong airport, which took about 40 minutes early in the morning, with a brief stop to check passports. less