I stayed at the Renaissance Convention Center several times back in the early days of Priceline. I could get it for $50. Always enjoyed it.
The Westin on M St. was the second hotel I ever received on Priceline. $75 over Thanksgiving one year. One of my most memorable hotel experiences. They told me that when that hotel was built (under a different name) it was the most expensive hotel p.s.f. ever constructed in the city. I loved the bathroom with the separate shower and tub, and the Westin amenities back then were awesome. Wish I still had some of that shampoo.