If you do not know where to stay in Paris, our recommendation is the Hotel Cujas Pantheon, which is very well located in the quatier latin and offers good connections to most places you may come from or go to (see this map and more details). Make your reservation as soon as possible, since you are likely to find the hotel full it your just show up at the desk. Better call than send email, so that you will know right away whether they have rooms available.
(We used to recommend the Hotel Central des Ecoles in the same location. However, after standing went really down, this Hotel has been renovated, is now called Hotel central Saint Germain, and unfortunately prices are now much much higher.)
You may also check other hotels in Paris.
Didier Remy: 01 3963 5317 My home: 01 4335 3773 Our secretary: 01 3963 5570 Mobile: 06 7331 4900 Switchboard: 01 3963 5511 (usually switch off...)The numbers work from any place in France. From abroad dial prefix 33-1 instead of prefix 01.
From hotel Cujas, the simplest is probably to
take RER C form Saint-Michel to Versailles-Rive-Gauche and
Versailles-INRIA shuttle there (or the city phebus, line B
[click on Ligne B.pdf] between Versailles and INRIA.
A little faster but less flexible in the schedule is to take RER B to
Chatelet, change to RER A (direction Saint Germain), exit at Place de
l'Étoile, and take the Paris-INRIA shuttle.