The 2007 MIT Energy Conference will be held at the Marriott Hotel in Kendall Square. 
The street address for the Kendall Square Marriott Hotel is:

Marriott Hotel in Kendall Square
2 Cambridge Center, (Broadway & 3rd Street)
Cambridge, Massachusetts 02142 USA
Phone:  1-617-494-6600

For more information, please visit the hotel's website: http://marriott.com/property/propertypage/BOSCB
The following are directions to the Marriott Hotel in Kendall Square.
http://marriott.com/property/mapandnearbyairports/default.mi?marshaCode=boscb

The Cambridge Marriott block of rooms is now full. 
There are still rooms available at a negotiated rate at The Kendall Hotel. Mention the MIT Energy Conference for the discount.

The Kendall Hotel
350 Main Street
Cambridge, MA 02142
617-577-1300

Rooms are under a block called "MIT ENERGY CONFERENCE"

Standard rooms: $139.00 per night plus tax
Upgraded rooms in the new tower: $149 per night plus tax
One bedroom: $229 per night plus tax
*All rooms include a very hearty breakfast and free wireless and Ethernet cable in the room

Other hotels conveniently located to the energy conference are:

Liberty Hotel
Cambridge Residence Inn
Royal Sonesta
Le Meridien
We do not have a negotiated rate with these hotels.

Directions to Boston Marriott® Cambridge
From Logan Airport:
by taxi — Taxi fare from the airport is about $30. During non-rush hour, the taxi ride will take about 20 minutes. During rush hour, the ride could take 35 minutes.
by subway — From any terminal at Logan Airport, take the Silver Line bus to South Station. At South Station, change to the Red Line subway to Kendall/MIT (inbound toward Alewife). Under normal conditions the ride will take about one-half hour and the fare is $1.70 (Charlie Card) or $2.00 (cash).
by car — Follow signs at the airport to the Sumner Tunnel. Pay the toll and take the Sumner Tunnel to Route 93 North. You will see a sign for Interstate 93 North at the end of the tunnel. Take 93 North to Exit 26 and follow the signs to Storrow Drive. Get onto Storrow Drive for approximately ¼ mile. There will be a LEFT exit for Government Center/Kendall Square. Take that exit and at the bottom of the exit take a right. This will put you onto the Longfellow Bridge. Go over the Longfellow Bridge which will turn into Broadway. The hotel will be on the left.

Hotel Parking:
On-site parking, fee: 8 USD hourly, 20 USD daily
Valet parking, fee: 25 USD daily

Local Directions:
For customized local directions:
http://marriott.com/property/mapandnearbyairports/drivingdirections.mi?marshaCode=boscb

From I-90, the Mass Turnpike:
Take I-90 East (Mass Pike) to Exit 18 (Brighton/Cambridge). After paying the toll, bear right towards Cambridge. Once off the exit, go straight and this will put you over the River Street Bridge onto River Street. Follow River Street, which turns into Prospect Street, for about nine lights (1 mile) and turn right onto Broadway. The hotel will be on the right.

via Public Transportation — MBTA ("The T"):
Subway — By train, take the Red Line to the Kendall/MIT Station.

Campus Map:

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