Our family had a wonderful time during our late summer vacation. The house is really great! Ample, clean, in a quiet neighborhood, and with all the comforts of home. The pool was clean and always empty; and the beach was great (white sand, clean/tranquil ocean, tons of seashells, etc.).
Our only issue was that there wasn't any wifi or cable TV working (and cell phone coverage was spotty), due to a recent ownership change that had not set up the account with Comcast yet. However, the property manager Kim was amazing and really went above and beyond to try to resolve the issue. Ultimately, it didn't work while we were there, but on the bright side, it allowed us to really unplug/disconnect and entertain ourselves as in simpler days: listening to the radio, playing cards, reading, etc. So my recommendation would be to check in advance to ensure wifi is working.
Other things to keep in mind: 1) the beach is about half a mile away and no parking available there... so keep that in mind if you are taking various beach items/walking with kids; 2) the mosquitos and no-see-um bugs are ferocious... so take plenty of repellant and anti-itch lotion.
Other than that, we would totally recommend (and return to) this great home for a Sanibel getaway!