STARWOOD HOTELS & RESORTS
EX-10.66
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<DESCRIPTION>EX-10.66
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<P align="center" style="font-size: 10pt"><B>Exhibit&nbsp;10.66</B>



<P align="center" style="font-size: 10pt"><B>AMENDMENT<BR>
TO<BR>
EXCHANGE RIGHTS AGREEMENT<BR>
(CLASS B OPERATING PARTNERSHIP UNITS)</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amendment, dated as of December&nbsp;17, 2003 (this &#147;Amendment&#148;), to Exchange
Rights Agreement dated as of January&nbsp;2, 1998, among Starwood Hotels &#038; Resorts
Worldwide, Inc. (the &#147;Corporation&#148;), SLC Operating Limited Partnership (the
&#147;Operating Partnership&#148;) and certain limited partners of the Operating
Partnership (the &#147;Agreement&#148;). All capitalized terms used in this First
Amendment and not otherwise defined herein shall have the respective meanings
assigned thereto in the Agreement.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS, the Board of Directors of the Corporation has determined that it
is advisable and in the best interests of the Corporation and its shareholders
to exercise the Corporation&#146;s right pursuant to Section 2(c) of the Agreement
to modify the right to exchange Class&nbsp;B OP Units pursuant to the Agreement, and
the amendment thereto, dated October&nbsp;10, 2002, as set forth in this Amendment
to extend the period of time during which the holders of Class&nbsp;B OP Units can
exchange such units for Class&nbsp;B EPS.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NOW, THEREFORE, the Corporation agrees, for its benefit and the benefit of
the holders of Class&nbsp;B OP Units, as follows:


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    <TD width="3%" style="background: transparent">&nbsp;</TD>
    <TD width="1%" nowrap align="right">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Notwithstanding anything contained in Section 2(a) of the
Agreement or in the form of Letter of Transmittal attached thereto as
Exhibit&nbsp;A to the contrary, a holder of Class&nbsp;B OP Units may make a
Class&nbsp;B EPS Request in a Letter of Transmittal delivered to the Trust
after the Cross-Over Date and on or prior to January&nbsp;2, 2005.</TD>
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    <TD colspan="5">&nbsp;</TD>
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    <TD width="1%" nowrap align="right">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Except as otherwise specifically set forth herein, all terms and
provisions of the Agreement shall remain in full force and effect and
shall be unmodified by the effectiveness of this Amendment.</TD>
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<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, Starwood Hotels &#038; Resorts Worldwide, Inc. has
adopted this Amendment as of the date first above written.

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    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="5" valign="top" align="left">STARWOOD HOTELS &#038; RESORTS WORLDWIDE, INC.</TD>
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
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</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">By:</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
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    <TD>&nbsp;</TD>
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    <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left"><HR align="center" size="1" noshade width="100%"></TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Name:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Kenneth S. Siegel</TD>
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    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Title:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Executive Vice President,<BR>
General Counsel and Secretary</TD>
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