"Neat freak" refers to a person who likes everything to be very clean, organized, and tidy.
Sentences with «neat freak»
So while it might be hard for neat freak me to see the toys put away in the wrong place, in the long run it's not something worth getting upset over. (attachmentparenting.org)
And, I'm a huge neat freak so I'm not too comfortable leaving the blender in the sink. (livehalffullblog.com)