Your options are pretty limited when it comes to hotels in Sungai Besar. Green Hotel is centrally located, so you can easily walk to restaurants and supermarkets for food/drinks.
The room was clean and modern. Otherwise, it was tiny. There's no desk, chair, bottled water, coffee, or kettle.
My room had a window at street level. Outside there was a table where people sat talking until the early hours of the morning.
If you have to stay in Sungai Besar then stay here or at the newly opened Grand Court Inn, but don't expect much.