I stayed in Frank's house for one week when I visited London. He is a very welcoming, friendly,considerate and helpful fantastic host making me feel like at home.
Location of his house is quiet and safe, also very convenient transportation to go to the city centre. You can walk 3 minutes from his house to the bus stop leading to city centre.
Frank is a good speaking partner. He likes exchanging and providing with some good ideas. He also plays music. You are lucky if you do something related to music. I would like to recommend his house to my friends when they need accommodation in London.