The room is smallish, with nice decor, wood floor and exposed brick wall.
It has a sofa bed, desk, chair, closet and a chest, nice touches. Shares a bathroom with two hosts and one other guest room. Decent kitchen, with fridge, stove, oven, but no microwave or toaster. No common space (living room or dining space). Laundry (washer and dryer) available in basement of building ($1+$1.50 per load).
Apartment is a second floor walk up. Location is good, 5-7 minutes to L and M trains, 30 minutes to Union Square, and the residential neighborhood has many small shops.
Marina is very warm and friendly, and the place is nice and tidy, but not for OCD clean freaks.
It was good for my three week stay.