Great stay. Terrific location. Apartment is equipped in fairly basic style but tasteful and with everything you could want. We stopped here for just a couple of days but longer stays would work well too. As others have noted, stairs and 3 layers of door security are slightly painful but not at all significant for us. Stayed in multiple (notionally) 5 star boutique hotels in London through the course of this trip and would probably favour this option over any of them.