Virtual staging is usually a bad sign.

Libet Johnson, heiress to the Johnson & Johnson fortune, appears to be in the mood for tying up loose ends. Two months ago she reconciled with her ex-boyfriend, celebrity weight loss-through-pregnancy-hormones guru Lionel Bissoon, reaching a joint custody agreement over a 9-year-old child that they "found" in Cambodia and brought back to the U.S. on a humanitarian visa.

Now comes the shedding of the real estate: Ms. Johnson has just listed her 30th-floor condo at the Trump International Hotel and Tower. She's asking $4 million for the two-bedroom, 2.5-bathroom spread, or exactly double what she paid for it back in 2004.

We assume it was used as either a staff apartment or one for distant visiting relations, given that it lacks park views and sits more than 20 floors below her old penthouse at 1 Central Park West, supposedly the largest in the building, which she sold back in 2007 for $18.5 million. In any case, the apartment clearly hasn't been lived in recently: it's almost totally devoid of furniture or personal touches—the first listing photo is digitally staged—and what is in the apartment looks like castaways for the help.

It also looks like Ms. Johnson has had some difficulty selling the unit. It was previously listed with Brown Harris Stevens for nearly $3.9 million, but after being taken off the market for two years, it's now listed with Stribling's Pamela D'Arc.

And it's not the only home that Ms. Johnson has had a hard time selling. She picked up the old Vanderbilt Mansion at 16 East 69th Street from fellow heiress Sloan Lindemann Barnett and her husband for $48 million—Ms. Johnson got "screwed" in the deal, said one broker—and it's been sitting empty for want of a mid-$5o million buyer.

And then there was 85 Perry Street, her 200-year-old West Village townhouse that lost over $3.4 million in value between her 2008 purchase and her sale last year.

"She hasn't been very lucky in her real estate endeavors," said one broker. Though given her trust fund, she probably hasn't lost any sleep over it.

If it's not broken...

Is 1 Central Park West the sexiest residential tower alive? Not in our opinion, but former Esquire publisher Alan Greenberg, who's now the president of Avenues: the World School, a for-profit school set to open this fall in Chelsea, certainly seems to think so.

Mr. Greenberg and his wife Joy have traded their 2-bedroom, 2-bathroom condo on the 25 floor of Trump International Hotel and Tower for a 3-bedroom, 3 1/2-bath on the 30th floor.

The Greenbergs bought their new place (which is nearly twice the size as the old one) for $10.6 million, according to city records, less than a month after the apartment was listed for $11 million with Sotheby's broker Roger Erikson. (News of the planned swap was first reported by The Real Deal earlier this month, but not the details of the sale).

We're guessing that the Greenbergs may have had their eye on the larger unit for quite some time. And while such activities could put the couple in danger of breaking a commandment—thou shalt not covet thy neighbor's house—we hardly think the neighbors minded. The selling price was a smidgen less than the ask, but it was still a pretty penny more than the $6.4 million the sellers (the Beverly Hills-based Aloha Lane Investors—whoever they are) paid for the property back in 2004.

And for the Greenbergs, at least, the building has proven to be something of a cash cow. The couple's current apartment, which they put on the market a day before closing on the larger space, looks like it may yield more than double the $2.25 million they spent when they bought it in 2000. Last listed for $5.75 million, it's already in contract. Things move fast at Trump Tower.

When Mr. Greenberg listed the couple's apartment this March, he told The Real Deal that he and his wife were looking for more space so that their recently-born grandson could visit frequently.

Besides space, the new place also offers lacquered walls, "dramatic lighting" and a "stunning powder room," according to the listing. Also, while it's hardly a change of scenery, we'd also guess five stories up may offer slightly better views.

kvelsey@observer.com