Here to share our experience with Alvin as well! He worked on our very first home (a 4-rm flat) and we are very satisfied with the work done.
First of all, the price was very reasonable, and there was no hidden costs or extra charges that came unexpectedly. The quality of the workmanship was also very good. Like other reviewers have said, Alvin is very lifestyle oriented, and would give you recommendations and advice based on practicality, and not because of any prevailing interior designing trends. This was very appreciated from us as new home owners, and helped us move away from the unrealistic expectations set by interior design blogs and websites. I was also being a little particular and a bit of a pain during the design process, but Alvin was always accommodating and open-minded. He would always be patient and answer all our queries, even when we took forever picking our tiles, laminates and paint! Behind the scenes, he would also make sure everything was always running smoothly, and you could contact him regarding anything and at almost anytime.
What stood out most of all about Alvin is his integrity, kindness, sincerity, and pride that he holds in his work. With all the stories about errant or difficult contractors around, we were lucky and happy to have Alvin do up our first home for us. I'd wholeheartedly recommend him to anyone thinking of renovating.