I did this in Bristol for a few months this time last year – lodged, that is. Financially, it helped a great deal – miles cheaper than a scutty B&B.
I paid £70 a week for three nights (travelled south very early on a Monday and returned north on a Thursday night. I used my own bedding, but towels were provided.
In the end, I moved out as the landlady occasionally used to let her Labrador sleep on my bed when I wasn’t there – unfortunately, I’m allergic to dogs, so I wasn’t too chuffed. She denied it until one Monday when I returned to find paw prints on the bed. She also turned the lounge into another bedroom for her and the dog, so the only place to sit and unwind in the evening was in my bedroom.