I feel it really depends on getting the right kind of interior designer you need. Not all interior designers will share the same chemistry with you, for example if design is important to you, then you will need a "real" designer in order to click. For my home, I had to meet up with 8 designers before I settled on my perfect one, haha. It didn't take as much time and effort as more than half of them I had eliminated after the first meeting as it became clear 1) we were not on the same wavelength 2) they didn't understand what i needed. just my 2 cents; good luck on your renovation journey!