Consequently, he was also the first person of non-Baltic German descent to become mayor, the culmination of an Estonian-Russian political alliance, created by future Estonian president Konstantin Päts and Jaan Poska that broke the power that Baltic Germans had in the political system of the city for centuries.

In 1893, he was transferred to the position of adviser to the Governorate of Estonia, in the capital of Reval.

His mayoralty was considered to be rather hands-off, allowing for the Reval city council to enact legislature.

[2] He is generally regarded as an honest, decent mayor who was sympathetic to the concerns of the Estonian population of Tallinn.

Prominent politician and former mayor of Tallinn Edgar Savisaar wrote that Hiatsintov "was a mayor in a big sense of responsibility and thoughtful attitude", and that he "is proof that the value of a person is not his nationality or his origin - but in his ability to create values as an exemplary, honest, and decent town citizen and city leader".