Did your partner get the EEA Family Permit? If so, would you mind sharing your timeline?
Wherever you go, you should know these: don't make payments/deposits in cash -unless is made to an account at a Bank-, always ask for a receipt/voucher, check carefully the inventory of your rental unit, make sure you get immediately a hard copy of your tenancy agreement, if something isn't right call your landlord/property manager immediately. READ THE FINE PRINT!
Normally, you will be asked for a 6 week deposit + 1 month rental.
Personally, I will never, ever, rent anything without having an agent involved. I'd rather pay their commission, than being scammed.
Studio flats to rent in Manchester City Centre, Greater Manchester Most of the units have an agent and their telephone number listed.
Animo
(Cheers)