If you use the Next/ Own Cloud client, you´ll find your files in your home directory- nothing more to do- and the advantage is also, that you can use several owncloud accounts at once. That works in Windows as in Linux clients (for Apple I don´t know).
I use this solution because it gives the opportunity to move files and folders from one cloud to the other.
nextcloud will let you mount samba shares as external sources, using the users username and password to access the shares. If you are using an AD or LDAP server for credentials, they can log in automatically to their samba shares. Next cloud can also use Samba to authenticate.