My central unit went out and I have to get window units for my house. I got a 5,000 BTU Mini Mechanical Window AC and it will be great in my grandkids room. 
Winter still here so I am unable to install in their bedroom window,  but I tried it on my living room to see how cold it would get and it got cold fast. 
The 5,000 BTU Mini Mechanical Window AC came with all the hardware and window installation as well as directions. The 5,000 BTU Mini Mechanical Window AC looks easy to.put together. 
It's dial operated,  not digital but it will work in their room.
Definitely going to tell my family and friends about 5,000 BTU Mini Mechanical Window AC.