1) Reasonable quote, as compared to other contractors. Also, willing to make adjustments to the quote as I amended my reonvation plan (for a bathroom).
2) Personally inspected the bathroom, took measurements and asked good questions. Nearly half the contractors I contacted didn't bother visiting the bathroom.
3) Punctual, polite and professional. Never a problem.
4) Made useful suggestions to enhance the bathroom, such where to place a towel ring or what soap shelves the bathroom/shower needs (turned out to be the perfect choice).
5) Upheld his warranty when the shower cartridge needed replacing shortly after the bathroom reno.
6) Did not ask for money upfront (as several contractors do), but instead offered a reasonable schedule of payments.
7) Worked really fast and efficiently. Nucu personally performed the work all day with an assistant. Some contractors had promised to start work the next day, but they would have taken twice as long to complete the job--which means I would have been stuck with a giant mess in my home and no access to my bathroom.
Bottom line: I would recommend Nucu to anybody and would hire him again.