Looking for a part time room

Hi!
I am a part time cabin crew and my living requirements are a bit out of the ordinary. I am in London every month and half for 7-8 days in between trips. I would be out of London for a month and half and then work for 3 weeks at the time. But in those 3 weeks I will be home just for 7 or 8 nights to rest from my trips. I am looking for someone who has a spare room but doesn't want to rent it all the time. My main problem is I guess, where to store a bit of my luggage when I am gone, so that is why I decided to try to find something more permanent where I can always come back home to, but to share with someone who is not really bothered to share home with someone like me. The budget is negotiable or we can make a deal with some travel benefits for people that love to travel. Let's talk.