Google Maps and the Orły Branży Rowerowej catalogue show the same address; OpenStreetMap puts a building here on Parkowa.
This is a separate spot from Grażyna (Zwycięstwa 2) and from the rental on Klonowa. Parkowa is quieter, closer to the greenery than the promenade. You take a bike or a go-kart and ride the paths toward Dziwnów or along the lagoon — we have not confirmed an exact price list or hours from two sources, so we do not write them.
In season the spots by the sea are often open as long as there is a queue. Drop by on site or ask when you pick up the keys whether this point is even standing that week.