I stayed during 6 nights with my two sons (12 and 8 y.o). I didn't meet Serkan personally, but the communication with him was very easy and he was very kind and took care to see if everything was correct. Serkan's instructions to reach the house and check-in were very clear.
The house is very near to Euston Station and well comunicated by bus or metro to all the touristic places and center of the city.
The room is like in the photo. With very clean towels and sheets. It was warm inside the room and in all the house (it was very cold in London during that week). The kitchen has everything you need and it's next to the room. The toilets and bathroom are downstairs.
The only inconvenient is that if you have a light sleep, you can hear the neightbours of the other rooms enter at night because the room is next to the main door. But it wasn't serious (my kids didn't hear anything) and rest of the hosts were quiet and friendly.