Whatever line you use, follow signs to Westfield!
After the ticket barrier, exit the station and turn left on to the Lower Ground floor of Westfield
Walk the whole length of Westfield until you see Waitrose in front of you
There is a coffee shop on the right called Ergon. Turn right there, you will see Tap East (nice micro brewery on the left)
Exit Westfield, you will see a kids playground on the left and Stratford International station directly in front of you
Walk straight through Stratford International or along the walkway to the right of it
When you reach the main road (International Way) turn left and look up – Rondo is directly next to the station!