It’s a hike from Providence, but Jamestown Arts Center is one of the state’s most dedicated and well-run arts spaces. Exhibitions tend toward tasteful abstraction and mid-career Rhody artists who’ve spent considerable time honing their aesthetic lexicons. Group shows and pop-up installations are common, offering audiences variety. Openings are usually well-attended, a strong indicator of the Arts Center’s vitality and importance in the island community of Jamestown.