Couple seeking studio or 1 bedroom APT

My husband and I are looking for a FURNISHED studio or 1 bedroom apartment from the month of September 1 until approximately May 31st/June 1 total of 9 months.

Our current lease ends at the end of August.
We are desperate to find a place and within the price range of 850 euros max with small deposit or no deposit.

Anywhere in Madrid is fine.