This scrumptious 6-BR, 5-BA townhouse on at 51 Chestnut Street has been on the market for more than two years now. That it chopped its tag by $500,000 at the two-year mark on June 7, then, should not be a surprise. No, what's surprising is that the 4,774-square-foot spread, with roof deck and garden, offers two garaged parking spaces as well—for $300,000 each. The townhouse itself will now run you $5,875,000. Decisions, decisions.