A wrought-iron spiral staircase in the back entry hall of this five-bedroom, 5 1⁄2 -bath Cove Neck estate ascends to a “tower room” with views of the 6.8-acre waterfront estate listed for $5.995 million.

“It’s a wonderful, big room — it could be a wonderful art studio or a writing studio, a place to go read, to get away from everything,” says listing agent Margaret Hargraves of Daniel Gale Sotheby’s International Realty. She is co-listing with Peggy Moriarty.

Off the back hallway, a detached carriage house has room for eight cars and includes a game room and full bath above.

Doors in the living room open to a waterfront wraparound terrace and deck overlooking an in-ground infinity pool and the water. A den includes a built-in bar. The dining room features curved ceiling millwork and opens to a screened-in porch. All three rooms have fireplaces.

An eat-in kitchen with skylights includes a Garland six-burner stove, Viking refrigerator, breakfast room and fireplace. A nearby catering kitchen is outfitted with stainless steel appliances, white cabinetry and tile floors.

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Two bedroom suites are on the first floor. Upstairs, a master-bedroom suite includes a dressing area, fireplace, private balcony and built-in window seats. The floor includes two more bedrooms and a full bath.

The lower level has a separate entrance and includes a 1,400-bottle wine cellar, game room, full bathroom and separate entrance, Hargraves says.