Hi - this is sort of a last minute, as I am looking for a hotel room for this upcoming weekend, Aug. 20-22. We are looking for something central within the city, does not need to be very luxurious, just need a clean place to sleep and shower, in the 100 euros range. Any recommendations would be most welcome. Thank you.

Try La Familia or La Minerve on rue des Ecoles. Clean nice breakfast good transportation

very helpful, thank you!

Try booking.com or trivago.com
U will find all the details and nearby area (u may select area ,price and decide according to guest comments)

Priceline

I have looked on those various booking sites, but was hoping that someone had a specific great recommendation for a hotel centrally located and reasonably priced. Thanks.

thank you!

Also recommend La Familia. We have stayed there twice and were pleased. Although I've never used it, Priceline's name-your-own-price sounds like a good bet, especially on such short notice.

Hotel Favart has availability on your dates. It's a nice hotel in a great location in the 2nd. A double is 92.50 Euros.
http://www.hotel-favart.com/

August is low season for hotels. It isn't high season until September.