Simply, it varies from room-to-room. We've shared Two Bedroom villas with friends/family and had great reception in one bedroom while other bedroom could barely connect.
If a solid connection is important to you, bring your own equipment.
But also note that the wired service was disconnected a couple years ago. If you plan to bring your own equipment, it will have to be some sort of wireless repeater that can piggyback resort wifi or a cell carrier hotspot.