I got into Shenzhen pretty late from an eight-hour train ride down (11:30pm!). The front desk was more than happy to check me in. They also don't really speak English, and we got through somehow with my broken Chinese and google translate. The only minor issue I had was that they don't take American credit cards or let you pay through hotels.com. Luckily, I had both wechat and alipay. They also require 100 kuai in cash for the deposit which you get back after checking out.
The location is great! Not a far walk to the metro, and a close taxi ride to the bay port area.
The room was super spacious and comfortable. The window had a lovely window seat all along its front. The bed was big with clean sheets. There are two small free water bottles, an electric kettle, and free bathroom necessities like shampoo, body wash, toothbrushes and toothpaste. There were outlets on only one side of the bed, but others scattered throughout the room. I wish they were on both sides of the bed - it'd just be convenient if you're staying with another person if both of you can charge your laptops or phones by your bedsides.
Breakfast was good! There was a decent variety to choose from. Along with general Chinese fare, think porridge, fried rice or noodles, they offered bacon and sausages. The dimsum they had in big steamers was really good. Surprisingly, there was also an espresso machine and a toaster for making your own toast with jam!
Checkout was fast and easy.