Marrakech Rouge is a sensory overload as soon as you walk in the door. The eclectic mess of Morocco-related items and citizens of the world make it instantly feel like a good choice of hostel. My brother and I are backpacking through Morocco and Western Europe this summer and we immediately fell in love with this place--mainly because of the people.
If you like to meet new people, make new friends, swap Facebooks constantly (this isn't required), then Marrakech Rouge is definitely right for you. I cannot emphasize enough how friendly everyone is here, making the hostel your favorite place to be while in Morocco.
Also be warned that everyone is very liberal with the 'quiet time' after 9:30. We were often up on the terrace into the wee hours of the morning, talking loudly about every thinkable topic and drinking/smoking/having fun with our new friends.
In short, Marrakech Rouge caters to anyone of any age who likes to have fun meeting new crowds of people.