I fell in love with Vieques with I went last year. I like the Esperanza area myself. I didn't find Isabel Segunda too scenic. We stayed about a five-minute drive outside Esperanza at Blue Horizon Boutique Resort. It's not on the beach but its peaceful with beautiful views. Most places you will be driving to the beaches anyway. As Twanger said, Bio Bay tour and Sun Bay are musts. I would also recommend renting a vehicle. Taxis are not plentiful.