I got quotations from 4 well known companies which included Tivolli Design. My own impression of them below (I didn't go with Tivolli)

1. Very calculative in the sense they feel customer want to take advantage of them. During getting a quotation all other companies straight draw 2D/3D hand sketch for you to visualize. One company even better straight draw 3D. When asked Tivolli they say no drawings until deposit paid. How to pay deposit if can't roughly get the design
2. Person claimed that this company is an Italian design house. Googled the company actually just a Malaysian brand.
3. Their quotation not as professional as others whereby it clearly states line by line and the price. Feels a bit too simple their quotation
4. Attempt to schedule a meeting at site to get measurements. The sales person keep changing the time after agreeing. Lastly another sales person came rather than the initial person I deal with.
5. Price wise comparable to other companies so I didn't chose them as other companies showcased better service