This was a great place to stay in London! The location is incredibly convenient for hopping on the Tube and heading anywhere. The beds were comfortable, the shower/tub was FANTASTIC, and it was so helpful to have some kitchen staples. There are also lots of restaurants and markets close by for grabbing a quick bite.
I can't say enough about how great the hosts are—I had lost a bag at the train station and so we were late checking in. They responded right away and were able to get us checked in. On the day of our departure, they graciously allowed us an extra hour in the apartment before heading off to the airport.
Potential issues:
It is not a particularly quiet area. There are a lot of people packed together in the neighborhood. You hear people walking above you (this is a basement apartment) and talking outside. Basically you just don't know how noisy it may be at any given time. One day our doorbell was rung repeatedly at 4:30am. Other mornings were almost completely silent. It's just something to be aware of.
There is no microwave, which made it challenging to heat up food. We tried the oven and it seemed like it hadn't been cleaned or used in a long time. We were afraid to trip some kind of fire alarm, so we just used the stove instead.
The apartment is situated on the Bakerloo line of the Underground. While the location is immensely convenient, it is VERY VERY hot in that Tube! If you plan to be spending a lot of time on the Underground, just beware this is not the most pleasant of lines.