I've stayed at Olatz's place for 4 nights and would definitely choose to stay there again next time I visit London. Due to my late night arrival, she'd kindly provided me with self-check-in instructions and a key to enter. The place itself has a nice kitchen, a big warm room and an amazing cat! The place is located 10-15 min walk or 5 min bus from St.Pancras (National Railway to\from Luton airport) and King's Cross station (large underground hub station). Besides that, within 5 min walk there's a bus station with line 390 calling at zone-1 central attractions (Fitzrovia, Soho, Mayfair, Hyde park). Highly recommended!