Noisy street works in Sheffield city centre have been keeping people awake throughout the night.
Pavements in the heart of the city are being resurfaced during the small hours to minimise disruption to traffic while roads are closed to enable the work.
Sheffield Council and contractor Amey say they had done their best to warn residents about the night-time work taking place.
But one resident living in the West One apartment block has vented her fury after being woken at 2am by the racket of resurfacing in Fitzwilliam Street.
Niki Elliot says she was shocked to be woken from her slumber last Wednesday night, having not received any warning letter.
"I was woken up at around 2am and I assumed something major had happened for them to be making so much noise, like a broken gas or water mains," she said.
"I later found out some information about the work had been posted on the noticeboard at West One, but that was too late.
"They should have written in advance to all the residents who might be affected, given them the chance to object.
"There are hundreds of people living in city centre flats who would be disturbed by this sort of work and I don't think it's acceptable."
The pavement resurfacing is part of the £2 billion Streets Ahead programme to upgrade streets and lighting across the city, which is being carried out by private contractor Amey for Sheffield Council.
A Streets Ahead spokesperson said flyers had been displayed on notice boards throughout West One prior to work starting, due to problems accessing the post boxes of all residents.
"The resurfacing works are being completed under a combination of day and night time working to minimise disruption to local residents and businesses and to ensure the works are undertaken as safely as possible whilst managing the traffic flow," the spokesperson added.
"Streets Ahead operatives will return to the site and all the pavement resurfacing works will be completed by March 8."
The spokesperson said it had not been possible to begin work earlier in the evening because the number of pubs and clubs in the locality meant it would be difficult to do so safely.
More night-time noise is expected in the area when roads there are resurfaced, beginning this June, with a mixture of day and night-time working planned.