Perfect location! My wife and I spent 5 weeks here and really enjoyed the convenient location. Surprisingly, the apartment is quiet; either we got lucky or this building tends to host quiet people, which is very good for a busy area like South Kensington. The price is higher relative to what you can book directly through the website of Nell Gwynn House (we found out right after we made the booking) but lower than hotel rooms of similar sizes in the area (so we kept the booking anyway). Overall, it’s a very smooth experience. Next time in London, we will put this apartment building top of our list.