Michelle is a fantastic host. We felt like home with our favorite aunt:). She can advise what to see, what transportation to use, where to get food, what may require reservations, what may be seen for free. The apartment is about a 7 min walk away from the southwark underground station and a similar distance to the waterloo station. There are also lots of buses. Several small grocery stores are nearby as well as a variety of places to eat. You can easily use the kitchen as well. Michelle has all the condiments and tea you might need.
The area does not have as many old buildings as, for example, pimlico, but it is nice when you get to know it. There is a workout park in the front and a playground in a courtyard nearby. Walking distance to westminster bridge and Tate. The apartment is tight (esp. for my fellow Americans) but functional.
We highly recommend it. It could not have been better anywhere else for us.