Located in Siltakylä, 30 miles from Svartholm Fortress, Sea Hotel Mäntyniemi has accommodations with a garden, free private parking, a shared lounge and a terrace. Offering a restaurant, the property also has a bar, as well as a sauna. Some rooms at the property feature a balcony with a sea view. At the hotel, the rooms have a closet and a flat-screen TV. The rooms come with an electric tea pot and a private bathroom with a shower and a hairdryer, while some rooms also feature a kitchen equipped with a fridge. At Sea Hotel Mäntyniemi rooms contain bed linen and towels. The accommodation has a playground. You can play pool, table tennis and darts at Sea Hotel Mäntyniemi, and the area is popular for hiking and fishing.