Elmira and Alex are just that: super friendly and super helpful. Responded to queries always within minutes.
If you are looking for a place to spend the night before a connecting flight from Heathrow in the morning, look no further. This super- easy-to-reach (very precise description by the host how to get there), very well equipped appartment (they also provided snacks cereals and water, the appt has a fridge and microwave has everything you need to rest between flights without the hassle of having to go into London. Great value for money (think of it as a Premier Inn de luxe with a very personal reception). Very clean and well kept. I definitely will be back and can recommend it.
Only caveat: the area is not really quiet, but then again none of the hotels in the area are either (as I experienced in the past).