From the top, the floor plan is showing

A window in the north wall of the living room and a door that opens inward to the outside (east wall of LR). The LR has a hallway and three closets with doors that opens outwards.

Heading east, you go into the kitchen. It has a pantry/closet/utility room with a hot water heater and folding doors that open outwards. The kitchen has a countertop along the west wall, a stove, and a fridge. The south wall of the kitchen has a sliding door that leads to the patio.

Heading back west, you have a small bathroom with a door that opens inwards. You have a toilet, a tub, and probably a vanity.

The bedroom door opens inwards and you have two closets on the north wall and a window on the south wall.

It does seem like a lot of closets in the hallway, but my guess is that one is a coat closet, one is storage space, pantry, or a linen closet, and one may be for the heating unit/central air.

Yes closets

Circle off the kitchen is probably the water heater.

It looks like a pantry, which also contains the hot water heater. It might be for laundry though, not a pantry.

It's called a floor plan and not a map.

Are those empty rectangles closets? Also does anybody knows what the rectangle with the circle thing could be?