I had a great time at Enrico's place. I was staying in the smaller, so-called "Cozy" room. The room is quite small but it has everything one might need to feel at home. And the bed was super comfy!
Enrico is a great host. He replied to all of my messages very quickly, explaining the details and answering any questions I had about the trip. You can also see that he is genuinely happy to welcome everyone to his home. The team also let me check in earlier, which was very sweet of them, given that I arrived very early in the morning. The location is superb: just a 10-minute walk from the Marylebone station.
Keep in mind that you will be sharing the apartment with other guests. I didn't have any problems with that: all other travelers were quiet and considerate of people around them. But you will have to put a little extra effort cleaning after yourself in the bathroom and other shared areas.
All in all, I can definitely recommend Enrico's place to anyone coming to London.