The asset was controlled by investment fund RC2, jointly with Antares Management, a company owned by businessman Dumitru Becsenescu.
Nicolae Bucovala owns several hotels at the Romanian seaside.
The value of the deal has not been disclosed.
Located in the center of Mamaia resort, Zenith Conference & Spa is a four-star hotel, with 296 rooms, wellness facilities, exterior pool, restaurants, private beach and conference hall.
(English version by Catalina Apostoiu)