Seeking room or flatshare within Herts

I'm looking for a room within walking distance of a direct line into London, preferably within the Herts area, big enough to accommodate my desk, a bed and a small wardrobe. Furnished or unfurnished is fine, I have my own stuff in storage in Hemel. Having formerly lived in Berkhamsted I know the area fairly well. I'm a freelance software developer and musician, ideally looking to share with someone of similar ilk, although I'm not overly fussy. I'll mostly be working on-site in London, although I may spend the occasional day working from 'home'.