The Washington Street between Chinatown and city hall: https://goo.gl/maps/J2ZmkdXu1MPPSYm39
Agreed that there's a ton of spotty areas that make me wary to bike around, especially in your neck of the woods. I'm willing to go far out of my way to stick to the places with good bike lane coverage. If only there were any way at all to get to the airport...