I waited for Sandrine for no more then 5min and I saw her sort of rushing up to me . We said hello and headed off to her flat to drop off my bags . Now I need to interject at this point and saw a few things about Sandrine .

Options are: [-] Sandrine 's flat might be within a driving distance . [-] Sandrine 's flat might be within a bus ride away . [-] Sandrine 's flat might be within a walking distance . [-] None of the above choices .
Answer the following question: How far away might Sandrine 's flat be from where I was ?
Sandrine 's flat might be within a walking distance .