Bogdanov went to court with a lawsuit for eviction

Bogdanov went to court with a lawsuit to evict his daughter Maximova from her apartment with her husband and two children. In support of claims, Bogdanov referred to the fact that his daughter and son-in-law create conditions that are impossible for them to live together with them in the same apartment. At the hearing, four witnesses were questioned (two on each side), who gave conflicting statements. The court decision stated that the plaintiff´s argument about the impossibility of living together with the defendants at the hearing did not find confirmation. But since the defendants did not acquire the right to housing, they are subject to eviction as temporary residents.
Was the court right? Are any principles of civil proceedings violated in this case?