Uli was excellent to work with, always quick to respond, fair on pricing and showed up on time! We had hardwood floors that in a short 4 year span had taken a beating from everyone being home over the pandemic and our kids dogs being home from college. We had dull floors with some surface scratches as well as some deep groove scratches. not only was Uli able to make those surface scratches disappear he color corrected the deeper groves and they are no longer noticeable! I highly recommend Uli and Grades Hardwoods to make your hardwoods look brand new again! I could not be happier with the results – thank you Uli!