Wife and I are taking our 1-year old to Sydney for 3 nights and Melbourne for 4 nights over Christmas. We just want to take it easy and be situated somewhere baby-friendly with easy access to the main sights. Wife already booked the Grace hotel in Sydney and the Blackman in Melbourne. Are these good choices or should we change? We depart from Melbourne at 6am so I'm wondering if we should even stay at a hotel on the last night, or just camp out at the airport with the baby sleeping in his stroller. Are there lounges open or reasonable accommodation options at the airport?