According to NYCGovParks.org:
“Bounded by Dean Street and Bergen Street between 6th Avenue and Carlton
Avenue, this playground takes its name from Dean Street. Dean Street, in turn,
is named for Silas
Deane (1737-1789), a Revolutionary War statesman.”

FOUNDED (1948): Parks
acquired the property in 1948. The playground opened that same year: “For
years, although the playground was not officially named, residents referred to
it as Dean Street Playground.”
RENOVATED (1970): New additions
included comfort station, slides and swings, four seesaws, sandbox, flagpole,
hopscotch area, asphalt ballfield.
NAMED (1987): Officially designated
“Dean Playground” by Commissioner Stern.
RENOVATED AGAIN (2000): Funds ($70,000)
provided by Mayor Giuliani and City Council Member Mary Pinkett. Safety
surfacing replaced.
TODAY (2005): Go
to the meeting and find out.

Photos like this one may soon be illegal.

Prospect Heights Dilemma: Parents/friends/relatives visiting. Tiny apartment. Few choices for nearby hotel, guest house, hostel, flophouse, or seedy rent-by-the hour place on side street in Park Slope. Solution: Good question. This new dailyheights category, Accommodations, is a start. Entry number one:

Bed and Breakfast Marisa (www.brooklynbedandbreakfast.net) at 288 Park Pl.
718-399-9535; 917-865-7428 | Rates $95-130

A local Old Media outlet (which describes the space as "cozy, but uninspired" and "mediocre" in the  romance department) says breakfast is "not included" (so, that would make it a Bed-and-Breakfast-Not-Included?). But Marisa’s website say "fresh-brewed
            coffee or tea, fresh fruit, fresh-squeezed orange juice, bagels and
            spreads is served in your room."