Yes, the rhapsodies content that has been implemented in the may update has been catered to level 60 and up players.
It doesn't go through dangerous areas and if you find yourself in trouble with the NM fights (There's 2 of them) you can always choose to shout for help.
The fight that unlocks the key item needed to be able to summon trusts for the level 70 limit breaks takes place at the entrance to Escha Zi'Tah so there should always be a high level player nearby.