The Tisztás Rehabilitation Institute for Addicts, operated by the Chance Instead of Aid Foundation and located in the same building as Thalassa House, aims to empower individuals in care to lead independent lives and facilitate their reintegration into family and social environments, all while achieving complete abstinence.

In addition to focused individual or group psychotherapy, the institution aims to (re)build the psychosocial environment of the residents, support the development of autonomous problem-solving skills, and assist with addressing various issues such as housing, family matters, employment, training, and other challenges using the resources available within the institution.