accomadation letter

hi all i just wanted some help in my accomadation letter

i will be living with my sister and her husaband and wanted to know what i should write. i will be living rent free.

also i wonda if the new immigartion cap that will come into force next month will affect spousal visa cases?

Newbie, did you get any advice for your letter? I am also looking for some help, as my Mum (who we are planning to live with) does not know what to write in the letter.