Terrible Workmanship - RUN AWAY!!!
We had our entire house refloored by Carpet Superstore in 2015. While the carpet was installed properly, we have had no end of issues with the tile. We have repeatedly talked to our salesperson, Yikai, and the store management and they have refused to take ownership of the problems.
Carpet Superstore supplied us a list of their installers and we hired one. We should have fired him after day one. The tile installation was terrible. Aesthetically, it appears fine, but we have had tiles lifting, falling off vertical surfaces and cracking in the grout. We had to fire the installer after he stole baseboards out of rooms he had no business being in, punching holes in our freshly painted walls in the process.
Carpet Superstore did send out "their best" installer to review the job and recommend repairs. His recommendation - replace it all. To date, they have made only minor repairs but refuse to standby their warranty.
My recommendation - stay as far away from Carpet Superstore as possible. Their promises of warranty are lies.