Go to VRBO.COM
This stands for vacation rental by owner.
You can pick and choose from hundreds of owner condos. Lots of pictures. Can see what you get for your money.
I used it to get a place at edgewater for the 1st week of June.
You need to book in advance. Some owners mail you keys, but others can arrange for you to pick up at condo.
I've stayed at the Holiday Inn Sunspree about 7 times (not using VRBO of course). Nice facitlity, but you get tons more room in many of the condos for the same price, which is nice if you have a large family.
Good Luck!