Nathan was very welcoming and showed me to a good restaurant on the day of my arrival. During my stay he only spend one night in the apartment, but he was within reach by telephone.
However, if you have chosen to transform your secondary home into a money-making hotel the way Nathan is doing by renting out four rooms on a permanent basis, you should come up to hotel standards. The pictures do not at all live up to the standard they depict. I stayed there from Monday to Friday and the moment I entered my room I was welcomed by a very strong smell of mold and it was clearly visible in the corners and above the windows. The windows only opens a few centimeters and in no way enough to provide a blow of fresh air. The breakfast in the way it is depicted does not exist. You are shown a cupboard where you can find cereals and some bread. I had the red room with a chair and a desk which was good (after I had cleaned it for dust) as I had to study during nights. But it was hard to concentrate due to the lack of fresh air and the constant smell of mold in the room.
On the last day there was no electricity in the morning and consequently I had no shower and no breakfast. I immediately contacted Nathan before the rest of his customers would wake up and apparently it was because his electricity meter had run out of money. He told that as soon as his account would be (automatically) recharged the electricity would go back on - and it did after half an hour, but too late for me as I had to rush off. The free wifi only worked periodically in my room. As all the rooms in "Nathan's hotel" was fully booked there was sometimes a queue to the toilet and the shower. There was not the kind of natural light in the rooms as you see on the pictures because the whole building was covered in scaffolding. That was not mentioned on the website and the room price stille seems to be the same.
I guess this is the kind of standard you can get away with in a city like London and still make good money by renting out all four rooms in your (secondary) home on a permanent basis.
Nevertheless, it does not change the fact that Nathan is an easy going and very friendly host.