We (Wife, 2 young sons & I) have just returned from Planos Bay Apts and can only commend it highly.
If you're after loud nightlife and rave partying...go elsewhere, Laganas for example - this is for families.
Our 6-yr old loved the Kids Club and they both enjoyed Kate & Carla's kids disco/parties (well done Tony and all the reps.)
Watch the supermarkets, hunt around, the prices are a lottery and often higher than home - self-catering is not particularly cheap.
Families with young kids will enjoy this place, the pool's big and clean, the town's got plenty of eateries, some with playgrounds even.
Zante is not a big place and there's a whole big world out there, but if we ever did go back, we'd have no qualms in going to Planos Bay Apts.
Mind you, the airport is the pits!!! Could you imagine any other country hosting the Olympics and offering its guests such crass facilities? The airport kiosks are also an absolute rip-off.
Hate the airport....Love Planos Bay.

business over the years has taken me into airports in some weird and wonderful places around africa, even nigeria, but i'd go as far as say that most of those airports are bliss compared the s**t-hole that is zakynthos airport. we were lucky, ours was the 1st flight in (returning, the 1st out also), but there was not enough room for everybody at all 3 gates (230 passengers?). we still waited 2 hours for the one guy to load the luggage onto the conveyor on the way in, and check in took about the same.
pricewise, yes it is the biggest rip-off on zante, buy at the tax-free shop, not the kiosks.
dear greeks, you have some beautiful places in you country, this is not one of them!!!! for god's sake sort it out and meet the 21st century.