I saw the workmanship of your tilers, it is excellent and you are very lucky to have engage them. To me, the flooring job is the most important and also the most worrying process during the renovation process. Once the tiling are completed it is quite hard to get the contractor to rectify problems like grouting gaps because I don't think the contractor will hack and redo everything again unlike carpentry work where is still a chance and hope to rectify those unsatisfied issue. Therefore, I feel that it is important to engage a good tiler to lessen the headaches during renovation.