For our family of 6, 3 adults 3 kids, an apartment suited our needs. The complex is situated 5 mins walk from Busan Station with a walkway connecting the two. Ideal if arriving by train as we did.
Check in, and access to the room, doors and lift are by QR code given upon online check in on the day. With phone batteries as they are, I found the accommodation office and got 2 physical cards and that worked great. The staff were very friendly.
The apartment was on 38th floor.
The lighting makes it feel a bit clinical or starship enterprise with everything being bright white.
The apartment is very well equipped with kitchen, lots of air-conditioning, 3 bedrooms, large lounge area, and mist of all the views over the harbour.
If you want convenient location to railway station, great views and apartment style living, I would recommend.
Getting to and from attractions in Busan takes a while though as there is only 1 metro line serving Busan Station, and Busan is spread across a large area.