We stayed only one night in order to visit relatives in the area so didn't spend much time in Northolt.
The apartment is a converted garage and the room is warm, clean and welcoming, and Karmen provides plenty of snacks for a continental breakfast.
It was a bit of a performance to get hot water in the washbasin as there is only a cold tap. So we needed to boil the kettle, and the showers cubicle is quite small.