I would highly recommend staying at Serena's place. First, the flat is well located with great access to grocery stores and other amenities. Additionally, the building is located right next to one of the Vauxhall Station tube entrances, which was very convenient. That being said, if you don't mind walking, I really enjoyed taking a stroll along the Thames up towards many of the locations I visited. The place is clean, comfortable, and had everything I needed for a nice stay. Serena was a really great host--she emailed me detailed and easy to follow instructions for finding the place and getting settled--very easy to work with. She was also very kind and helpful. An exceptionally great host and place.