That is very important in Seoul, South Korea. I was also only about 1 1/2- 2 blocks away from a subway stop, lots of places to eat, and I have a lovely view from all windows of the Han River.
This is the long hallway of my apartment building. The open door at the far end of the hallway, straight back, was a guest bedroom and there was another one on the right hand side (can't really see it in this photo). The guest bathroom is the door frame on the left side at the far end of the hallway-
The door frame on the left side (closest to the viewer) was the little entrance area to my bedroom.
The 'no doorway' entrance, far back, on the left AFTER the standing open door... was the open area to the doorway to the lobby. You stepped down into this tiny room. My favorite part was the floor to ceiling storage cabinets (lovely woodwork) that was floor to ceiling shoe storage! In Asia, you take your outside shoes off at the entrance to the door (or usually outside the apartment door in the hallway) they are not worn in the house/apartment. You could tell if someone had lots of company or a party- there would be lots of shoes in the hallway outside their doorway.
If shoes are needed inside- there are 'inside' only shoes to wear. I also used these shelves for holiday storage/etc. This area was big enough that I had a small bench along one wall.
The door that you see on the far right (closest to the viewer) went to the dining room/kitchen area. It was a huge room. The areas that you don't see was the entrance to the master bedroom/bath/walk in closet area and the living room.
I had bamboo floors throughout the apartment. The key was a magnetic key that you scanned at the outside door panel or you could impute a code and the door could be opened that way. Some apartment buildings had 'fingerprints' used for entrance. My favorite part of the apartment were the views and the HEATED FLOORS throughout the entire apartment. The underground parking and fast elevators were nice too.