The flat is very easy to get to on both bus and underground, only one stop on the underground from Kings Cross. Host was very helpful and quick to respond. The flat was comfortable and suited us for our long weekend for a birthday treat.
There are a lot of stairs up to the flat, just something to be aware of - this wasn't an issue for us but could be for others. The road can be little noisy at night but I am a light sleeper so others may not notice.
Great stay overall!