Small, strangely shaped room close to a noisy junction. Sirens, horns and loud motorbikes throughout Saturday night (following nights were better, and earplugs help) made sleep difficult. Fully closing windows reduces the noise but make the room stuffy and unpleasant. The bed was OK, although the pillows not very good.
The room was clean (although there was sometimes a slight sewage smell in the tiny bathroom). The wi-fi was decent, it's convenient for the Metro, and the staff were nice. But a good night's sleep is the most important thing and we didn't always get that.
Reasonably priced hotels are hard to find in Paris - but next time we'll look elsewhere.