My husband and I have stayed at Metro Apartments twice this year, we absolutely love the rooms, they're somehow cosy and spacious at the same time! Always nice and clean, the staff are wonderful, very friendly and helpful.
Location is great as well, a short walk from either QVB light rail or Wynyard station so getting there is easy. Darling Harbour, Madame Tussaud's, Sea Life Aquarium, Wild Life Sydney Zoo, and all the bars and restaurants around the harbour are within view of your balcony no matter what level you're on.
If shopping is what you're in Sydney for then you're in a prime location to take a short walk to Westfield Sydney, Pitt St Mall, QVB, MidCity Shopping Centre, The Dymocks Building and The Strand Arcade.