We spend a full week here and enjoyed it. The place is quite large and located in a quiet and safe neighborhood. We learned to know several of the neighbors when we incidentally tried to get into the wrong house when we arrived. That lady even drove us to the supermarket later that day !
When you want to visit NYC, the location is perfect. In 5 minutes you walk to the ferry and enjoy a 40 minutes cruise to downtown Manhattan (for only $2.5 !).
At the end of the street is a bus stop. The bus takes you to a subway station in the Bronx on line 6 (a direct connection to the city.)
The stairs to get to the 2nd floor can be a bit tricky indeed as other people mention ; we travel with a lot of luggage and we managed to get it all upstairs (and downstairs).
The house is situated underneath one of the approach routes to Laguardia , however, between 9 pm and 6 am there is hardly any air traffic. But if you are a light sleeper, better to come prepared for this. During the day we were in the city , so it did not bother us.
All in all, we were very pleased with the house. When we had a question, Yocelyn responded almost immediately.