 Nothing it was an impeccable stay 
 Stunningly presented hotel that makes an impression with their design choices as soon as you enter The top floor restaurant offers a superb view of Vienna s skyline as does the somewhat surreal pool The standard double room I stayed in struck a beautiful balance between brutalist design and Austrian elegance Don t expect much privacy if you re travelling as a couple The central shopping district is a short walk away and plenty of green space is nearby Several fantastic restaurants are also within an easy stroll though the hotel s own offerings were great as well 