The thermal spring with a pond is located between Chorvátsky Grob and Cierna Voda (Monarská alej). Is a small concrete pit about 2 × 2 meters which is surrounded by several panels in the center of which is the well itself.

The water flows through the fittings and a strong hose, which helps to regulate the water temperature in the "pool". It is 1231 ms deep and the water temperature goes up to 50 ° C. There is a smaller swimming pool next to the pit.

An overwhelming part of the bathers are naturists, from Bratislava. The unfenced spring is situated in fields, and is accessible all year round, 24 hours a day. A great warming bath to be had in the Winter!