An “extraordinary opportunity” has hit the Capitol Hill rental market. Capitol Hill developer Michael Malone is putting his 1905 St. Mark’s mansion up for rent, CHS has learned. You can make the nearly 9,000 square-foot 10th Ave E home with “dramatic views,” the “fantastic rec room” and the “pool side terrace and gardens” your romping grounds. But you’ll probably need roommates. Rent clocks in at $15,000. A