City spas can be pure bliss. Battling Boston drivers to get to them? Not so much. Fortunately, Lexington has an outpost of Newbury Street’s much-adored Bella Santé. The hushed oasis features invigorating services such as the heavenly three-step hot spot massage, aromatherapy facials, and the anti-puff marine eye lift. Book soon, before city slickers catch on and start a reverse traffic jam.