This also happened in Sampaloc, Manila, and the same apartment that I called home for the past two years.
I was always left downstairs doing the dishes and cleaning the house. I usually did it late in the night when all of the guys were asleep so no one would bother me while I'm doing my chores. I was already washing the dishes when I got goose bumps on the back of my neck. I didn't bother me but deep inside my mind I was already thinking that the unseen housemate was just nearby. The only light that was on was the light that we had in the kitchen and the light in the living room had already been switched of. I heard footsteps on the tiled floor but it was so faint I tried not to pay attention to it.
I noticed that it was heading to the sofa and then it stopped. I thought it was one of my housemates who had come downstairs for a smoke. I felt like asking a question at that point. I asked if someone was having difficulty going to sleep. It was still dead silent not even a whisper as faint as the sound of the whispering wind answered my question.
It was then that I decided to turn around to see who it was and I was surprised when I saw someone sitting on the sofa but he had no feet and the face was turned away from me. I decided to get closer to the figure but as I was getting closer it seemed to fade until it finally disappeared.
From that day on every time I was doing my chores late at night I always saw a figure of a male teenager (short hair with a masculine figure) seated on the sofa and it seemed that he was waiting for someone to knock on the door.
There's more but if wrote them all down the stories would be almost the same thing happening over and over. Always when I am alone in the house or when everyone is asleep. Not only have I had these experience but my housemates have also had strange encounters.