Email will not do it. Call your landlord. Tell him about the bed, the heating and the TV. Inform him that if he does not take care of it, you will take care of it and deduct it from the rent. Call the real estate agents, and inform them that if they do not take care of this, you are reporting them to Defensa del Turista and Afip. If you get no answers, proceed to repair everything, or buy heaters, and deduct it from your rent, send a carta documento - legal letter - before you proceed, where it states what you signed for and what you got, and how you did not get response. The cannot evict you, or anything really. You have to play tough, or they will take you for a long ride.