How about a Boeing Business Jet - a stretched variant based on the 737-900, rather than the 737-700? That's what I'd love to have. The plane should have cabin noise suppression systems throughout, so it will be really quiet inside. I'd love to have Internet connections and satellite TV (no, there won't be a satellite dish sticking out of the plane!), as well as a VCR to watch movies with.
There would be fair-sized bedroom in the back of the plane with nice king-sized bed, a lounge room with four cushy leather swivel seats and a fat leather sofa. Also, there'd be a couple of small tables there and a large hi-res TV and stereo. Put in a specialized desk with a flat monitor PC and a printer. A fridge is a must to put all the beer and other booze and stuff in. In the front one-quarter of the plane, that's where the galley kitchen and the bathroom with shower would be. The plane'd have all of the windows present, so you could see outside like any other passenger a/c.