The Hyatt is nice. I've been there on separate occasions and have had rooms overlooking the street and overlooking the atrium. Definitely prefer the atrium view. The Hyatt's sports bar is less expensive than the Renaissance's sports bar (Presidents bar?). Edge to the Hyatt.

I think the Hyatt has a jazz bar right off the lobby. The Renaissance has a cool bar right in the lobby. Edge to the Ren.

Both are close to the attractions mentioned above (the Ren being closer to the convention center). Hyatt has a Metro stop "in" the building (a short, stay-inside walk to the building next door and then down the escalator). Edge to the Hyatt.

There is a health club next door to the Hyatt which charges an outrageous daily fee. Don't know about a pool. Edge to the Ren.

But the think I do like about the Hyatt is an inexpensive deli right off the lobby. Much cheaper than the hotel restaurant. Edge to the Hyatt.