I loved The Suspicions of Mr Whicher!
I thought it was one book that truly lived up to its glowing reviews. Loved the details about Victorian life and the people who lived at Road House, the ways that Kate Summerscale dealt with lacunae in information and found it totally gripping. I thought it was one of the few massively publicised books that more than lived up to the hype and my expectations of it.
Haven't yet read 'Umbrella', but having heard WS talking to Mariella on R4 I've been almost prepared to give him the benefit of the doubt after his 2 decades of ceaseless 6th form twaddle and give it a go.
'Room' - very disappointing, but I read a short story by Emma Donoghue which was quite good and I wonder if 'Room' was really a short story that got stretched for sales purposes. It reads that way.
WRT to Susan Hill, she seems to be regarded as a 'serious' author, which I don't think she is. I read 'I'm The King of the Castle' as a child and found it brilliantly creepy (don't know if I would now, but mean to reread). I've read a couple of her books in the last few years and they seem quite well written in parts (atmospheric, good snapshots of recognisable settings, etc.), but also formulaic and bland.