any suggestion for a narrow mini receiver

The TEAC Reference series are nice, the Denon DM-series are also pretty good. You could try something like a Linn Classic all in one, or the Linn (sorry, can't remember it's name) all in one for surround. Don't let the all in one concept put you of: it performs to a pretty high standard.

Linn Movie Classik; about 1600/1700 used.

The Sharp SD-EX111 is getting a lot of attention at Audio Circle and Audio Asylum.

http://stereophile.com/news/11428/

The popularity is such that Overstock.com has raised the price on it three time since it all the hub bub about it hit the audio boards.

I'm using a TEAC reference series (paid around $300 new) for my home office/ipod setup and it sounds good.

What about the Boston Acoustics Recepter Radio® HD? This unit is 4" high, 7" wide and 6" deep. I have one in my bedroom and it is very good. It include a clock and preset for both AM and FM stations. Please see:
http://www.bostonacoustics.com/whats_new.asp