We were a group of five and it was really comfy to stay in Eva & Michy's apartment. Super super clean, location is more than amazing close to the underground and to lots of restaurants and cafés (Nachmarket is right behind the apartment) and everything we needed was already there. One note because we didn't understand this before we arrived .. 1.5 bathrooms means the toilet is separated in a separate small room which is fine but its worth mentioning.
Thanks a lot Michy and 100% we would love to come back and stay in your apartment whenever we visit Vienna again.