Well, this is an excellent room, i really loved it and specially its Hosts Christina and Leslie, and a few of its Co-hosts i had the chance to met. Leslie was so nice that when he checked me in he said my english was good (which, spoiler alert, it isn't). They were constantly offering help with anything they could do.
The house in its whole is sparkly clean, and to address the elephant in the (gold) room, it (the room) is small. But it was good small, you have all the things you need there, you just don't have lots of extra space for leaving clothes outside your bags. Most of my clothes needed to stay inside the bags, and i left only the change of clothes for the next day in the chair that's there. I stayed there 2 weeks and i didn't find it annoying in the least. So it is possible to stay there for extended periods of times unlike some other other guests suggested.
But be advise, that you were explicitly advised that the room was small. They tell you that upfront, the photos of the room are a pretty accurate representation of the room size. And even in the first contact i had with Christina, even before i booked the room, she made special emphasis on the shortcomings of the room (those being its size, and the utility room that's between the room itself and the kitchen, where they usually do laundry and stuff. So they are really direct with all its "cons", so when you book it, you know everything you need to know about this "special" room. And i did find it special, because its small size means coziness, and its decorated with a Harry Potter theme. It's not just a small room, it's a special room.
But for all its smallness, the bed stands out as really, i mean reaaaally comfortable. so it deserved the special mention.
And one last thing, while i was reviewing this, AirBnb asked me to rate with stars for different categories, which of course i gave 5 to all of them, but there is particularly one category that deserved 2 or 3 stars more, and that's value. Yeah, the room is small, but hey, it's really inexpensive, and it's a 5-10 min walk from King's Cross tube station. You really can't find anything of the same price range that is so well located. You are sacrificing a little space in your room for a great value. For me it was well worth it.