I am currently using Linux Mint 18.2, Cinnamon 3.4.6, and Nemo 3.4.6 aswell.
I seem to be having an issue with Nemo. My places (those bookmarks that are like Music, Pictures, Documents, etc) are now in my bookmarks section and without icons. All they show is a folder icon and the symbolic link icon next to them (since I have my Music, Pictures, Documents and such all located on an external hdd). This is making it difficult to determine which is which since I usually determine the folder by what icon it has first. It doesn't help that the places bookmarks are not in their original positions. This has happened twice already. I can't remember exactly how I was able to fix the issue before, but I remember there was a bookmarks config file with bookmarks and places separated. I don't remember where it is located but it fixed the problem.
So, that is what I am asking. Where the bookmarks config file for nemo is. I am sure it will fix this same issue for a second time. If anybody has any alternative way to fix this issue, I am all ears. Maybe possibly resetting all the settings of nemo? I don't know.