Newtown House failed to meet the required standards for children's residential centres.
Physical restraint was used on occasions when situations could have been "de-escalated" by more sensitive handling.
Children suffered injuries and one boy's leg was broken when physical restraint was used.
Only a small proportion of staff had suitable qualifications.
Assaults on staff were relatively frequent, and staff stress levels were high, as was staff turnover.
Specialist therapeutic services were very hard to get for the children and appointments could take up to six months.
Health board social workers, many of whom had good relationships with the children, were not given sufficient access to information about the children when they were at Newtown House.
A health board investigation into complaints about physical restraint was inadequate.