After reading your comment, I ran the file through SPP again and turned sharpening to -2.0 and added a touch of infill light. I then set sharpening in LR at zero and set Noise Reduction to 25 before exporting to a jpeg which is here. The jpeg is picked up off my Flickr page, so, I've no idea what sort of mangling has gone on. But you should be able to enlarge the pic a bit.
The shot was taken at 1/60s f2.8 iso 200 and AE -0.1 I tend to always take three bracketed shots at 0.7, 0 and -0.7 AE and set the camera up for -0.3AE, hence I get the -1.0AE. I do this because it is too easy to blow the highlights, even on a Merrill. My DP0 Quattro is even more sensitive and I've often found the best pics are -1.7 AE!!
I think I focused on the back window but it could have been the books in front of the window. At f2.8 the foreground was always going to be OOF.
Daunt Books, Marylebone High Street, London
https://flic.kr/p/Drh9xfhttps://www.flickr.com/photos/80621138@N05/