Poised in the heart of Fort Collins, our pet-friendly apartments offer the ideal solution for those craving a balance between their love for the rustic outdoors and the sophistication of modern design. Life at Mason Street Flats means being able to take a hike at Horsetooth Reservoir then going home to sink into stylish comfort. Our new studio, one-, two-, and three-bedroom apartments were designed with comfort, character and functionality to let you do it all.