I stayed at their propety near Dullas Airport in Washington. Was a Princeline stay, and thanks to Priceline I had been in more different hotel chains than I can count.

The Candlewood suites (at least that property) are in very good memory, I loved my two day stay there. I had a huge room, very clean, very comfortable furniture, free internet, they had a VCR in the room and a bunch of good tapes for free rental, a list of restaurants who do hotel deliveries (very decent priced) and a little convenience store in the place that sold food to normal grocery store prices.
It were a few little things, but from all the extended stay properties I was at, that was #1. Heck, the Marriott where I spent the 3 days prior to that was not as nice.