Professional Male seeks 2 day mid-week rental

I am looking for a room to rent in the south of Cambridge for two nights each week from October 2nd or after to allow me to start my new position as a Junior Group Leader at the Early Cancer Institute on the biomedical campus and work there part of the week. I currently live in Hersham, Surrey where I still have 4 years fixed into my mortgage, hence my need to rent somewhere near to Cambridge to take up this position where I will be leading research to develop technologies for detection of cancers at an earlier stage, when patients can usually be cured. I’m a 30 year old, male, non-smoking professional with good references available from previous rentals. My current working routine is to stay late in the lab until ~9-10pm two nights a week and I expect work late for those two evenings when I will be in Cambridge, hence I would minimally disturb you in your home. I’m hoping to spend ~£275pa on this rental but am willing to negotiate.