If you have KDE or just use Konqueror you can acces remote folder like this: fish://user@host
Finally, Konqueror can act as a file manager for local files but also, through FTP, WebDAV or other protocols, as a file manager for files on remote machines. The FISH ("fish://user@host") protocol can be used to manipulate files through SSH, allowing you to use Konqueror as the file manager for almost any machine you can connect to on the internet.
Source: Konqueror features page
Another option is mounting with FUSE and SSHFS.
SSHFS uses SFTP.
Article in Linux journal and shorter tutorial on Blog:
$ cd $HOME
$ mkdir randombox_home
$ sshfs email@example.com: randombox_home
firstname.lastname@example.org's password: ************