No description of Rov has been given.
Andrew and Valentine Wiggin traveled to Rov after leaving Sorelledolce. This was the first place where Andrew was seen wearing the Cifi unit in his ear that connected him to Jane. This was also where Andrew first listed his occupation as a Speaker for the Dead.
Previous Canon History
Rov's role here appears to have been replaced by Ganges in canon.
According to Xenocide, Rov was the first human colony, established on a former Formic planet. Valentine Wiggin recalled seeing the abandoned Formic colony on Rov as she entered the new Formic city on Lusitania.
In canon, the first human colony was Shakespeare, which seems to be the retconned version of Rov.