Interior photography rewards patience more than gear. Before I bring a camera into a room, I spend a few minutes watching how the light moves across it – which window throws the softest light, what time of day direct sun turns harsh, where the shadows fall.
For a clean, minimalist look I avoid mixing light sources: if the room has warm lamps and cool daylight from a window, I pick one and turn the other off rather than trying to correct it later. A tripod lets me shoot at a lower ISO in dim rooms without a flash flattening the space.
Wide apertures are tempting indoors but a stopped-down lens keeps the whole room in focus, which matters more than background blur when the room itself is the subject. Straight, level verticals do more for a photo of a space than any single lighting decision.