I've got to say, Dalir, you must have lived in the same apartment I did. I got the same feeling a lot-- in the kitchen too.
My old apartment was... Just that, old. It was built in the 1800's as a group of stores, but was put under the ownership of my old landlord's family. Since then, they rented it out.
As for me, I think I've seen some crazy stuff. Although I can't be completely sure. I remember seeing a strange black figure in the dark shifting itself as if it were a liquidified person. It could have been my eyes playing tricks on me, but for a while, I believed it was real.
Beyond that, I haven't seen anything else, but, like Dalir, I've felt like I've been watched before-- to an extreme point. I don't know, it's probably because I watch so many horror movies, and ghost shows.
Right now, I'd love to believe that there is life after death, though. I mean, when I die, I at least want to watch over, if not protect my loved ones. Honestly, it would be very anticlimactic if dying meant eternal nothingness.