My parents own at Manhattan Club.
Pros: Generally clean and a great location. The 1 bedrooms have 2 bathrooms.
Cons: The elevators suck. Be prepared to wait for elevators. When on your floor push BOTH up and down. If an UP elevator shows, but you want to go down, GET ON anyway. Assuming that the elevators will stop on their way back down is a huge mistake (they probably will not).
The point costs look reasonable to me, especially if you go on a weekday.
Other notes: You can access Manhattan Club via 7th Avenue through the Park Hotel (I think that is the name). There is a small door connecting to Manhattan Club. When in Manhattan Club, look for the door by the elevators. A quick explore from there will make it clearer. This is a nice trick for when you are coming up 7th. It saves a few steps so you don't have to go all the way around on 56th.
They serve Tea, Cookies and Coffee (free) in the lounge (26th Floor) in the afternoon. I think it is 2-4PM, but I'm not sure. We usually hang out there while waiting for the room to become ready.
Parking is expensive, but it's Manhattan, so you should expect that anyway.
I'm happy to answer any questions you have. We have been going for (holy moly) 15 years now.