Caroline's flat was just as advertised and she is a warm and thoughtful host. Our flights were delayed to the point of being totally rebooked and we arrived over 8 hours later than we planned, but she was responsive to our communication and greeted us with the keys. The flat/building is in a truly convenient location to the nearest tube stop on the Piccadilly line and I cannot overstate how important the location and access was to the quality of the trip. The Piccadilly line is ideal to access the main tourism areas of London without being bogged down by the population density that accompanies the main areas and tube stops (i.e. Covent Garden, Victoria, etc). And, the line goes right to Heathrow with no transfers, so you're almost always guaranteed to get a seat for the 70-80 minute journey. The flat is in a modern high rise that has two locked doors to go through with key fob, so it feels very secure. Views from the front and back balconies are terrific, and we barely heard or even saw neighbors. Caroline's kitchen is very updated and a joy to use. Close proximity to grocers, bars and restaurants make it very easy to feel what it might be like to live in the neighborhood, which is gentrified with young professionals, and university students. Do not miss the Compton Arms pub down by Highbury & Islington stop though. Turning south/east on Holloway Road opens you up to parks, more restaurants, and a recreation center. We ran in the area with ease, and I felt comfortable being out and about at night. A strong wifi connection in the flat enabled us to stay in touch with friends/family via email and unwind with Netflix on the iPad at night. I would 100% book again with Caroline and look forward to another trip to the UK!