Hello, I advocate for a fixed roof. For our (7x4m) we paid about 8500,- EUR. We had the four massive pillars installed right during the house construction phase. The terrace roof (metal on top, wood underneath) was then installed by our house builder about 2 years later. We love our terrace! It provides pleasant shading in the summer (we also have a south side) and the furniture stays protected from the weather all year round outdoors. We also don’t feel it darkens the interior rooms. However, we have enough windows all around. Here are pictures (already shown several times, but over time they tend to disappear into oblivion).