Very convenient location, just 5 minutes from the Finchley Rd tube, and right next to the Finchley Road & Frognal Overground. The window kept the sound out quite well and the street noise didn't bother us at all.
There are a couple of restaurants and cafes in the area though it's mostly fast food, and the apartment has basic cooking equipment and there's a supermarket not far. There were a few things like coffee and tea which was nice.
The bed was very comfortable (nice and soft, though not everyone will prefer that), but it is a small bed and shared by 2 people, it's pretty cosy. There was a couch that looked like it folded out, which is practical but it wouldn't leave much room to move around in the flat.
The bathroom is fine, a bit tired but that's to be expected in a building like this.
The check-in was very easy, Dani was there in person to give us the keys, though he said that self-check-in was also possible. To check-out we just left the door open and the keys inside, Dani had also mentioned that we could store our luggage for the day if needed.
Overall a good stay. Thanks Dani!