Overbooked, but charged for stay.
On April 28 around 6pm made a reservation via 3rd party online reservation system and received email confirmation the reservation was made; even had a confirmation #. Arrived at hotel and a very nice front desk agent (I think her name was N'sha)? told us their were no rooms available and there had not been any available since 3pm that day. She said we were the 3rd reservation she had to deal with, same exact problem. She apologized and made a reservation for us at the Candlewood Suites in Deer Park. During the time she was making the reservation for us another couple walked in. Guess what? They had the same exact problem even though they had email confirmation too.
We asked if our AMEX card would be charged. She said it shouldn't be since the reservation wasn’t in their reservation system. Checked AMEX a week later and of course we were charged. In addition, Candlewood Suites customer service said - as per their policy - we should not be charged for the Deer Park stay due to it being their screw up. Note: We had 3 separate conversations with Customer Service and each agent said this is their policy - credit both stays – we did not bring it up. 
First and second conversations; the Customer Service rep contacted the hotels on our behalf and talked to the owners. Said it would take 10 days for our AMEX to be credited. 30 days later; no credit. 
The last conversation with Customer Service on 6/2 - they indicated we had to talk to the particular owners of the hotel, even though in the 2 previous conversations THEY talked to the owners on our behalf. When asked for the owners' information they said they were unable to give it to us. Then they said we would need to contact AMEX and dispute the charges. Completely unacceptable making us do the legwork due to YOUR screw up.
The net net - do not use Candlewood Suites, especially this one. Unwilling to take responsibility and fix the problem when THEY mess up.
And finally, the only person in this whole fiasco who displayed professionalism, apologized numerous times, and got us a room was the front desk agent at the Clearlake property. Ironically, she’s probably the least paid and crapped on by her boss, but was still the most helpful.