I've been to the Crane quite a few times. Do you know your unit number? The first number of the four digit number is the building - you want to be in buildings 2-5. You can see a map at:
http://www.thecrane.com/About-The-Crane/Resort-Map/. The second number is the floor. I *think* all 3-beds are top floor units. Very nice! Congratulations!
The beach is not a swimming beach - big waves crashing in. Wonderful for body-surfing, but a very strong undertow. You need to be comfortable in the water if going out of your depth - which quickly happens. Our son, an excellent swimmer, got turned over by a wave when body surfing and bent his back badly.
The sand on the beach is the finest I have ever encountered.
You have to get down early to the beach to get a good pair of deck chairs. The local beach staff seem to reserve some of them first thing - I don't know if a small gratuity to them at the beginning of the week does that for you.
It's very isolated from the rest of the island, so I do recommend renting a car. Shop at the big supermarket at Six Roads. Only a 20 mins drive away. Driving is slow, both because of the roads, the number of cars, and the slow pace of the locals. Very different on some other Caribbean islands where they drive like nutcases.
The west coast - Caribbean Sea coast - is the far more populated coastline. Very busy, though in May it shouldn't be too bad.
Yes, Oisins fish market is wonderful, but you have to be a bit pushy or you'll never get any fish.
Finally, the staff at the Crane is rather cold, to the point of being unfriendly, compared to many of the other islands. On the positive side, they are far more efficient! No "island time" at the Crane!
P.S. The Crane is owned by a Canadian. At the end of the beach is Eugene Melnyk's villa - the Ottawa Senators owner.