Yasmin and Freddie's place was exactly what I needed, which was anything close to the Heathrow Airport and available on short notice. They were easy to communicate with, and they provided detailed instructions on how to get to their place from the Heathrow Airport from any of the terminals. Once I got to their house—about 2 hours later than I had anticipated—Freddie greeted me and showed me around. I only met Freddie since I arrived so late and left so early, and he was very nice.
Especially if you are from out of town (and from outside the UK), read the info Yasmin and Freddie give you carefully! All of the information is incredibly useful, especially the part about how to take the bus from Heathrow to their place for free. In retrospect, I wish I had taken their advice about taking an Uber since I had two large suitcases and a backpack, because even at 23:30/11:30 pm, the bus was FULL and it was a challenge to get a seat and then to get off without massacring everyone with my suitcases. However, the bus ride to the airport at 5 am was much less crowded. Finally, because their place was so close to the airport and because the Tube connected at the airport, I was able to take the bus to the airport for free, store my luggage at the airport for £12.50, and take the Tube into London for a few hours of sightseeing. (The £12.50 was worth it in my opinion since it meant I got to see London without baggage!)
In short, Yasmin and Freddie's place was the clean, close stay I needed, and the convenient location made it easy to travel into the city. I would stay here again without a doubt!