Pros- easy checkin, great location just around the corner from kings cross station, great coffee shop right next door, functional, well appointed apartment.
Cons- incredibly hot in the apartment (probably only occurs one week a year in London!) and noisy with the windows open so we couldn’t get a good nights sleep, difficult to get our luggage and toddler up the steep narrow staircase, small for our purposes but probably just fine for a couple.
Overall a good stay in central London.