$$: Cross the Rickenbacker Causeway from downtown Miami to reach Key Biscayne and Sonesta Beach Resort Key Biscayne, a family-style 300-room resort. The white-sand beach begins just past the Olympic-size pool. Sailing, tennis, and nearby golf beckon. Kids enjoy beach volleyball, water balloon fun, sandcastle contests, and field trips to nearby attractions. 350 Ocean Drive, Key Biscayne; (305) 361-2021 or 1-800-766-3782. Rates: $195-$435.

The best reason to choose the Mayfair House is to be close to the Coconut Grove shopping, dining, and nightlife district that surrounds it. Each of the 179 rooms has either an outdoor hot tub on the veranda or an indoor whirlpool clad in marble. A rooftop pool area overlooks Biscayne Bay two blocks away. 3000 Florida Avenue, Coconut Grove; (305) 441-0000 or 1-800-433-4555. Rates: $159-$649.

$: Bust your budget elsewhere by opting for Hampton Inn Miami-Downtown, a clean and safe but otherwise basic motel near the toll bridge to Key Biscayne. A no-frills fenced-in pool serves your need for a quick dip. 2500 Brickell Avenue, Miami; (305) 854-2070. Rates: $84-$129.

From Doubletree Hotel Coconut Grove, you can walk easily to downtown Coconut Grove attractions and to the waterfront on Biscayne Bay. 2649 South Bayshore Drive, Coconut Grove; (305) 858-2500. Rates: $109-$289.