We had our weekend in London. Eric and Alison were amazing hosts. Very friendly, flexible and communicative. Their home is in a walking distance to the nearest underground stop which goes directly to downton London. If you fly to/from Stansted Airport, coaches and trains run from Stratford centre which is again in a walking distance from their home.
They served us a complimentary breakfast in the morning.
They are very kind and lovely family.
Definitely stay with them again if coming back to London.