Mandarin Oriental – Best luxury city hotel  Last time you heard a pianist on a baby grand, it may have been mooching around the Molton Brown section of David Jones; but here in the Club Lounge 24 floors up, glass of Moet in hand the scene is serene. Tonight it's chicken Rendang and calamari sambal, the night before was an Italian banquet. You’ll like being member of the ‘Club’ where thanks to a 5 item a day allowance PJ’s come back ironed, your virtual office in the sky has a comfy armchair and billion dollar views. Cities often feel…