Paris is perhaps the only city in the tournament in which finding accommodation will not prove to be a problem, thanks to its huge range of hotel options, so booking in advance is not as key as in some of the provincial cities. That said, we’d always advise booking somewhere up before you arrive, for peace of mind if nothing else.
In terms of finding your way around, Paris is split into small districts called ‘arrondissements’, and hotels/rooms on offer will often advertise themselves as ‘a boutique stay in the 13th’ or similar. In general terms, the smaller the number the closer it is to the centre of the city - they begin at 1 (sometimes written as 1e or 1ere) which is home to the Louvre, the Palais Royal and some of the most expensive real estate in Europe.
From here, the numbers radiate out clockwise - generally speaking 1-4 are the touristic centre north of the river (the 4th includes Notre Dame and the Pompidou Centre), 5-7 slightly quieter south of the river but still home to sights such as the Latin Quarter (5eme) and the Eiffel Tower and Les Invalides (7eme). 8 to 11 covers the rest of the main centre of the city, back north of the river, with the Arc de Triomphe and Champs Élysées (8eme), Gare du Nord (10eme) and the Bastille (11eme).
With such a huge range of options, it’s hard for us to provide a comprehensive list of options within the confines of this guidebook, while accommodation services like Booking.com and the like will be able to show you at-a-glance what’s available.
Uefa also has an official accommodation partner - HomeAway (www.homeaway.co.uk/euro2016/) which works on a similar basis to Airbnb, offering flats, apartments and houses in and around host cities. Their search function splits properties between each host city, making it easy to use.