My suggestion would be to look at vrbo, homeaway, flipkey (trip advisor), as well. Find a place with a private pool, even if it's a smaller splash pool. I am always trying to economize (less money per vacation equals more vacations!) but I eventually ended up with a place with a private pool and I was instantly a spoiled brat. The very best part was coming home from a 1 am close at Magic Kingdom exhausted but still wound up. Taking a little swim at 2 am with a glass of wine (plastic cup of course) and just totally relaxing, it's hard to describe. Plus if you have kids with you it means you won't be constantly dragged to the resort pool.
Resorts to look at would be Windsor Hills, Windsor Palms, Paradise Palms, Emerald Island. Those all have 24 hour guarded gates. There are several others without the security (probably don't need it) that are cheaper. I am staying at a timeshare resort next trip (October) but at least it's at DTD so I am ok even though no private pool. But if it's doable financially, definitely get the pool.