My parent's had an amazing time staying at Matt's mum's place. She was very very kind and helpful, made them delicious breakfast, gave them tips on what to see in London and gave them a full little fridge, free of charge. The fact she is German helped, as there was no language barrier with my folks. Make sure you keep the windows of your room closed at night, as the sound from cars on the street next to the house is very loud. Once the windows are shut, all fine though. All in all a fantastic stay!