Myself and my partner thoroughly enjoyed staying at Karl's flat! Although we didn't manage to meet Karl in person, he was very responsive and helpful throughout our airbnb process.
His friend Mimi was lovely! She made us feel very welcome, showed us round, and ensured we had everything we needed :).
The airbnb is based at Maida Vale (greater london zone). It took us 20-25 mins on tube to get into the centre, public transport was very quick and easy! The location was also pretty and calm compared to the centre.
I would highly recommend staying here again for the price we paid, thank you for having us!