Sandra is a great host, that gives you the freedom you need while she is always giving a quick answer if you have questions. Her dog is lovely and there is a big kitchen and fridge that you can use.
Subway Stations taking you directly to Manhattan are only a 10 to 15 min. walk away. The neighborhood is really safe (I, as a woman travelling on my own always felt save there) and there are a couple of great Restaurants nearby (Astoria is known for its great food). There are also laundry rooms on the corner if you need to wash and a small grocery store just across the street.
I would totally recommend to take the chance and stay at Sandras place!