I started my research online. I gave them a call and ask for some referrals. They were prompt to provide me with plenty referrals. I talked to some Bertolli's customers and they all told me good things about them. I am glad I had Bertolli Floors refinishing my main floor (1500sq.ft.)Prior start refinishing, they applied few different stain colors on the floor and that was very helpful to decide which color would make the best match with my walls and cabinets. Now my floors look great and I just love it! Thanks Bertolli!