Just my opinion. But we’ve done both.
Cliffs are stunningly beautiful but by day 3 we missed being on the beach.
Ease of walking, access to food ,vendors etc. But most of all ease of access to the water. Get up and wade in at your leisure. No wading in, in the cliffs and you need to be comfortable in deeper water.
Also walking the west end road is not the safest. Very narrow and traffic moves quick...and remember they drive on the left. When half in the bag it can be hard to remember.
Again cliffs area is beautiful but for 7 day stay I’d stick with beach ...but by all means visit the cliffs, eat, swim ,sight see and form an opinion for the next visit.
Good choice with coco la palm.
We’ll be there in about a month.....