Most beaches, as nature intended, have turtle grass that make wading in 'icky' as the sandy bottom is a little muddy. This is easily remedied by using the dock and entering there by jumping or using the common steps. The ceaches themselves are ususlly well-maintained with plenty of chairs, hammocks, shade, and space. Because if the tropical environment the jungle grows right to the water's edge unless maintained; and they are beautifully maintained. While fairly narrow the beaches ar ewonderful and you can stroll the entire length from the cut to several miles south of town. Maya beach on Placencia peninsula is long and and postcard perfect. If you have time and money [and wish to be in a coma-inducing environment] consider that.
Of course, the Winter season is more pricey, yet busier. That's how I likeit, a bustling atmosphere, and no worries of hurricanes as in the summer.
Lastly as such a desirable place to vaca and live, AC and Bze provide a good value at any location that I am aware of. The copmpetition is too stiff; if youur lodging or services are not high quality, you will not be in business long. In short if the internet sites look/sound good they probably are.
I like the Caribe Island resort 3 mi south of town. On the high end and too far too walhk although they provide bikes and free shuttles. With [I assume] 2 couples would you want to be closer in so there is more flexibility?