$ 300,000 to $ 599,999 Mariners Harbor $ 402,000 15 Coonley Court , Staten Island Number of bedrooms : 3 Number of full bathrooms : 1 Number of half bathrooms : 0 Weeks on market : 18 weeks 100-year-old wood-frame town house ; dining room , eat-in kitchen , renovated bath , finished basement , 20-by-70-ft .