Hellingshaven is a snug, sheltered harbour in the centre of Grou, accommodating around 40 boats up to 12 metres in length. Toilet facilities are available on site during the summer months. The harbour also serves as a ferry landing point.

The ferry Gastvrij Grou departs from here, crossing the Rjochte Grou and De Galle to reach restaurant Oan 't Wetter at Waterpark Yn 'e Lijte, making Hellingshaven a convenient hub for both boaters and visitors exploring the waterways around Grou.