Sorry for the late reply! Just came back home from another long trip.
To be honest, I am impressed when I entered Alex's flat, sooooooo clean and nice. Alex is a very nice person and so is his girlfriend :D. They gave me lots of ideas and supports when I needed them. I actually planned to travel alone but my friend joined me 3 days before I departed. So it's quite a shame that I spend most of time with my friend everyday instead of talking with Alex more. But anyway I feel grateful for everything during my stay.