I'm going to tentatively second David's suggestion.
This whole thread was a bit of a puzzle to me until I realized the OP has two threads going in different directions. It seems she already owns an older Trillium
1300 (no problem for her Tiguan) and was considering a full-on professional renovation of that trailer:
Professional refurbishing in Ottawa?
She is also considering letting go of that idea in favor of a new trailer. She mentioned the possibility of a new Trillium
1500, which is probably within the towing capacity of the Tiguan. For a novice with minimal knowledge or interest in hands-on RV work and a decent budget, that seems like a better option to me.
The only hesitation I have relates to the stability of the company making these new Trillium
clones. Anybody know who's making the ones in the linked ads? Will there be any post-sale support from the manufacturer?