Nauseating smell in the hallways, sticky room carpets (eck!)
Smoke from other rooms comes through bathroom vent.

I travel to Dallas several times a month and I have stayed in several different hotels around Dallas and Plano. I won't stay at this Red Roof again, but nor would I call it a bad hotel, just not to my taste.

PROs
The most important - The hotel is new and clean, nice architecture - you can look down on the front desk from the 2nd and 3rd floors. Hotel was quiet when I stayed there. Bed was comfortable.
The attending staff are friendly.
Adequate TV programming. Perhaps fewer channels than some places.
Good coffee as you wait for the elevator
Next door to Krispy Kreme donut shop. Good for breakfast.

CONs
Internet in the rooms is not free, though wireless is available - which is nice. This was an inconvenience to me.
No hairdryer!?
Maid service seems to end at about 11am.
I didn't notice a breakfast or if there was one it was minimal.
We had a problem with the vending machine on the ground floor not accepting dollars (like the previous reviewer.)

very clean good facilities. however be warned if you do not have US ID checking in could take a while because they want something with an address on it my UK passport was apparently not good enough as far as ID was conserned?!?

I stayed three days at this motel while visiting my daughter. The price was extremely reasonable and the room was clean and comfortable. There are soda vending machines and ice machines on each floor. I was given clean towels every day and they even changed the bed sheets at my request. I highly recommend the Red Roof Inn if you are looking for an inexpensive motel that is both clean and comfortable.