My space is located just 2 stations away from Gimpo Airport. It's less than 50m from the station to my place.
It's cozy but has everything you need, including the kitchen, washing machine, private bathroom, big desk, microwave, gas stove, etc.
It's also very private. You won't share anything with others and you will be only by yourself or yourselves.
You can go anywhere in Seoul by subway. I'll put some subway map in the place so that you can get some ideas.
The mattress is foldable, so you can fold it during daytime if you need more space. Also, I have a single airmattress for hire just in case. Please ask me in advance if you need it.
The lower floors of this building are commercial area but upper than 2nd floor is residential area with same structure of my apartment. Luckily, I could get mine at the end of the corridor, so it's more private.
If you bring a car, you can park here free. However, you should go straight to the security office and ask him the permit everyday you park. Tell him you are the visitor of the number of my apartment. I personally recommend not to bring a car unless you are planning to go to suburbs of Seoul because driving in Seoul is very tough. Traffic jam and parking are really hard.
Please make yourself home ;)