Hi.
Although a bit late, here's a few answers. More will be available as soon as the Euros 2010 website will be online.
location: the "Galactus", located in via Malladra 14, Rome.
http://www.galactus.it/dove_siamo.asp
date: july 16th (friday) to 18th (sunday)
schedule (more or less):
friday 16th (from the early afternoon until 20h approx):
unofficial track: casual play, non-general opponent tourneys
saturday 17th (morning and afternoon till 20h approx):
official track: general opponent's qualifying round
unofficial track: casual play, non-general opponent tourneys
sunday 18th (morning until mid afternoon):
official track: general opponent's finals
unofficial track: casual play, non-general opponent tourneys
sunday 18th (late afternoon):
prize ceremony
accomodations: I recommend either an accomodation close to the venue, like the Cascina Palace, or in the center of the city, possibly close to a subway station (the location is reachable from a subway station by walking 10 minutes). Those who are coming by train may want to book an accomodation close to the Termini railway station (Rome's main railway station). The Fiumicino airport is connected with the city by a direct train too. This train is called "Leonardo Express" and stops at Termini railway station.
It is possible to find well-connected accomodations with a relatively cheap price of about 25 euros per person per night on the most common booking sites. If you see some interesting accomodation and want some advice before booking, PM or email me and I'll tell you if it's recommendable or not, given the price and the connections. I can't provide any feedback about the accomodation's quality, though, because I never slept in a hotel/hostel/B&B in Rome.
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do you have plans/suggestions after that time 
