They will take your money, so the best choice is to rent month to month, unless you are going to extend your visa based on family, marriage, being over 50, etc, when the IO requires an ongoing lease. Then there was talk, months ago, of the gov forbidding landlords from requiring a 2 month deposit.... don't know what came out of it but I've read posts in this very group about people losing their deposit. Good luck.
Get a third E-mail (or more). I prefer USB sticks and SSD drives. Have >500 Gb of data backup, none of it on Google or cloud. Only a complete house fire will erase my backup.