Hi Josh,
Another possibility might be the Courtyard Saint-Denis, which would probably be cheaper to pay for than using points. It's right next to a metro and RER line (at the end of the metro) and while it's outside of the city, it's very convenient. I have never stayed there, but have been to Saint-Denis many times because the royal abbey of Saint-Denis was the first example of Gothic architecture in the early 12th C.
ProfChiara