The configuration for EncFS is in the form of a dotfile (.encfs6.xml) and it's stored in the working directory. This way you only have to remember the passphrase because all the other metadata is stored in the configuration file.
Not up to speed with modern cryptography practices
From some audits in the past, EncFS has had some issues with being up-to-date as far as cryptography practices go. For example, it uses the same key for encryption and authentication or file holes not being authenticated.