The Airbnb is exactly as described. You are sharing a bathroom/common space with two other parties as stated in the description (so the cleanliness level will obviously differ based on who the other guests are).
My friend and I knew we'd be using the Airbnb primarily for sleeping and that we'd be out most of the day through late evening, so the Airbnb was a great value for its location and served its purpose for us. There is definitely street noise at night (you're on 6th ave so it's not surprising) but ear plugs are provided! Towels and basic toiletries are also provided. Sonny was also super responsive and the check-in/check-out process was very smooth.