Recently got a bad crack of laptop's case, but it wasn't the only one since I ignored others.
After trying some funny service centers in SPb, I decided to call official service center heavily advertised by asus.com - "ASUS Premium Service" (too pathethic) - and I liked it. Ordered parts on Monday, parts were there on Thursday. Gave away laptop on Friday and got it repaired within the same day for quite low price.
It is not like I am advertising it, but they are OK in my opinion.
The only downside is that they don't inform client about readiness state accurately, but may be it is me doing callbacks too fast?
Just in case: featured laptop is N56JK.