Ger is a very warm and lovely host, very uncomplicated and always willing to help. We felt welcome from the start.
The room is a bit smaller than it looks in the picture, but very lovely. And there are cupboards to store your luggage. Plus the area is too beautiful to stay inside anyways.
The (private) bathroom is big and provides everything you might need for a short stay (e.g. hair dryer)
I definitely would stay at Ger's again!

Hampstead is very nice, we found two sweet coffee shops for having breakfast, both at Perrin's Court (half way from the flat to the tube station, what takes like 10 minutes total).