Alternatives to heating by electric heater?

One way to heat the room is water steamer .It heat and also create moist .

second way is to use candle under a metal surface ,such as cast iron pan or Aluminum ,it create good amount the heat .

Third way is to use the heater that has fan and circulate the hot air .

Kerosene heater. Wood stove. Pellet stove.

There are no alternatives without burning some kind of fuel. If you live in an apartment, I DON'T recommend you do that.

Wear more and warmer clothes. For some reason people choose not to do this and decide to cope with cooler temperatures by turning up the heat, but clothes are CHEAPER than heaters and you only pay for the clothes ONCE, when you buy them. With heaters, you have to pay that heating bill every month.

Wear warmer clothes and you'll be warmer in every room, instead of just the two that have the heaters.

none that I know of. and landlord [lady] is required to provide heat as part of your lease [read to make sure this is so]

Wear a sweater.

READ your lease contract Your apartment should be "fit to inhabit". If the only heating is the electric heater, use it.

If you want heat, you have to get the power for it from something. If it isn't from electricity then it has to be from some kind of fuel that burns. It doesn't sound like you have a gas fireplace, or you wouldn't be asking this. If you don't have gas appliances or a woodstove or a heating appliance that burns something, there is nothing that's safe to use indoors.

let her pay for the "extra" usage !! it's your right to have proper heating in a unit..................check the tenant laws for where you live

You can weatherstrip the doors and windows to reduce heat loss. This is a cheap, low-skill project that you can do yourself.

Any fuel-burning heater runs the risk of killing you with carbon monoxide.

Calor gas. I use it in a room with no central heating.