My experience at My Mojo Vie was very positive. The general vibe is very laid-back.
I stayed in a single room and shared the facilities with the other guests: a fully equiped kitchen, a cool living room with TV, PC, board games and music instruments (!) and the bathroom. So it felt a lot like staying at a Viennese apartment with other people.
Every room is equiped with a huge array of items that a traveller might need: books about Vienna, umbrellas, mirror, beauty kit, scissors, ruler, notepad, pens, tablet, and so on. The list is incredible and the level of detail astonishing. Same thing goes for bathroom and kitchen, where you enjoy some freebies (soap, shampoo, etc).
Alessa and the rest of the staff are super friendly and love to give suggestions on where to go (there is a blackboard on the living room with information about what's going on in the city). You also enjoy their great breakfast which was included in the price.
Tram 5 stops right in front, and you can walk to Museum Quartier in ten minutes.