One thing is definitely true: Alexandra cares about you and your stay. She is a very quick responder and willing to help you in any possible way. A great person.
The apartment is within 3-4 blocks from the metro, located in a calm area and also close to some shops. It is spacious (very spacious if you compare to Manhattan). We were a family of 4 and stayed comfortably.
During our stay we basically used subway but on rare occasions a regular taxi costed us about 10-15 dollars from Manhattan to the apartment.
If you do not care about staying in Manhattan, want a spacious place (paying less than hotels) and do not mind about walking a few blocks to the subway, it is a no brainier. Just go for it. You'll be happy.