Set in Mariehamn, within 1.6 km of Gröna Uddens Beach and 2 km of Mariebad Beach, Gästhem Neptun offers accommodation with a garden and free WiFi throughout the property as well as free private parking for guests who drive. The property is situated 23 km from Kastelholm Castle, 24 km from Jan Karlsgården Open-Air Museum and 24 km from Aland Golf Club. The property is non-smoking and is located 2.8 km from Algrundet Beach.

At the hostel, all rooms include a desk, a flat-screen TV, a shared bathroom, bed linen and towels. All guest rooms feature a wardrobe.

Popular points of interest near Gästhem Neptun include S:t Görans Church, Åland Maritime Museum and Cultural History Museum of Åland. The nearest airport is Mariehamn Airport, 5 km from the accommodation.