Couldn't have been better!
This was my third time to Manhattan, the first time I stayed at the Ritz Carlton (treated by my mother), last time was for my honeymoon, this time I was just a short vacation with my husband - and we were so happy we chose 70 Park Avenue! When we arrived and checked in we were greeted by Ladie at the reception desk, she was so sweet. . .and not just because she gave us a bottle of wine because it was my birthday! Mike the bartender was a great guy, my husband and I would hit the hotel bar at the end of the day, he was so easy to talk to, born and raised in Manhattan gave us some great advice as to where to go and what to do (The Highline!). Christopher the concierge took very good care of us - the first night we arrived quite late and I was craving Risotto (New York has great Italian restaraunts); Christopher called one that was a short walk away and made us a reservation. When we arrived we were escorted to the upper balcony over looking the whole restaraunt, not only did they have a great risotto but we were treated like royalty by the staff! 
All of the staff here are so welcoming, helpful and genuine. Also, in our room when we arrived there was a hand written card from the manager welcoming my husband and I wishing me a happy birthday!
The hotel is in a great location, the room was a good size for manhattan, quiet, very clean and funky decor (loved the leopard print bath robe!!). Bed was comfy, my husband is 6'8" and has lots of back issues and he slept very well. One of the things I appreciated most is that they had a bathtub - I find most hotels now have just a stand up shower.
We never made it back for the free wine reception - but everyday we tried!
We plan to return to Manhattan as often as possible, we always figured we would stay at a different hotel each time. . .it will be really hard to not book here again next time. . .