Stayed at The Bristol Hotel for a 2-day conference booked from outside of India. Conference room was excellent: spacious, comfortable, excellent banqueting staff and service. AV system with screen and plasma TVs were good. Banqueting area by pool excellent. Reception and bar/restaurant staff helpful and friendly. Food in restaurant and bar was good. Problem was with my room which was tatty, shabby and uncomfortable. Bed was old, hard, uncomfortable mattress. Pillows under covers were covered with brown sweat stains from what looked like years of use from very many users. Sheets were greyed and although they looked laundered had marks or stains from long use. The room was cleaned daily but felt dirty and grubby. Bedside light was literally falling off the wall but fixed quickly by staff. The bathroom was tatty with the rack falling off the wall and rusty fixtures. I slept no more than 2-3 hours each night due to combination of the uncomfortable bed and the loud noise in the corridor in the early hours, chatting in next door room until middle of the night and mechanical vibration humming/buzzing noise that started at 2 am constantly for hours. Poor sound insulation from next door and corridor. This hotel is listed as 5 star but is certainly not 5 star by European or US standards. If a similar conference was held here again, I was definitely stay elsewhere. The hotel is well located for use of the excellent Delhi Metro so would be convenient for staying elsewhere.