 We stayed in a triple room and they only gave us two pairs of slippers but they gave another pair when we told them about it Seemed like they just forgot This was a very very very minor problem tho 
 Very spacious room The staffs were really kind and very helpful The speed of Wi Fi was awesome Also the location was excellent too Very close to Wien Hauptbahnhof Vienna Central Station and a supermarket was next to the hotel The toilet and shower was separated which is very helpful when you re in a rush They even had Nespresso Coffee capsule machine inside the room Of course they also offered two capsules of coffee They also had a small gym on the sixth floor The gym is for free as long as you have the room key 