There’s something, not much, etc. to be said for something/doing something
Definition 1 of 1
Pro Tip 1/3Nuanced Agreement
Suggests partial agreement or recognition that there are some positive aspects, though not overwhelming. 
There's something to be said for doing your homework in the library; it can be a quieter space.
Pro Tip 2/3Subtle Use
Often used to gently propose an idea or opinion that might not be immediately obvious or universally accepted. 
There's not much to be said for waking up early, but you do get a head start on the day.
Pro Tip 3/3Context Sensitivity
Best understood in specific situations; the phrase adapts to the context in which it's used. 
In the case of fast food, there's something to be said for convenience, despite health concerns.