Changes are being implemented at Jewish Care's Hyman Fine home in Brighton after concerns over care standards were raised by residents' families and Sussex Jewish Representative Council.
It is understood that the current manager of the home will be leaving by mutual consent. More staff will be brought in, supervision will be enhanced and the premises will be redecorated.
Two families of residents complained to the JC in September about staffing issues and the rep council has been investigating.
Jewish Care this week announced the completion of a consultation period. Chief executive Simon Morris and care services director Neil Taylor met rep council members. Residents and family members had also been consulted as part of moves "to ensure that the home is meeting the same high standards of care that are provided across all of our facilities".
There would be an "audit" of the performances of nursing staff and "a tailored action plan for them to work to.
"We have increased the levels of supervision and support from our London office, with specialist dementia care and care management experts now attending the home two days a week to offer fresh advice and guidance."
Jo Poole, whose 90-year-old mother and 88-year-old father are Hyman Fine residents, said she had yet to notice a difference.
"I have low expectations. Last time I visited there was one person in charge of 40 residents while there was a staff meeting going on," she alleged.
"There is no basic entertainment. They are just left to sit in front of the television."