Light is an exciting topic but here too, individual perception applies. In one bathroom, we have a very wide mirror and above it a slim, very wide LED light. When I turn this on, the entire bathroom with 8sqm is extremely bright; for the mirror, you should have such bright light. Since our bathroom is a bit angular, we also have two smaller, inexpensive lights from Philips distributed for the basic lighting. Of course, you can create endless scenarios, but for that you need separate switching options and in the end, you usually only use one or two of them anyway. Clearly, you need the shower to be bright but not glaring.
At about €70.- per opening, it adds up a bit and when buying the actual lights, you’ll be left gasping at the prices and they use the cheapest materials. In my opinion, installing spots must be well considered because you become very committed regarding the choice, beam angle, etc.
I would rather think about more wall lamps and also a rail system. I once had one where you could remove and hang the lights magnetically. Check out Oligo, Bruck etc., same like that but also at Paulmann or as wrote.
We have a similar "problem" at the counter here, over the work surface it should be bright, at the counter rather romantic; two lamps side by side would have looked silly. With a rail system you can play wonderfully with that; we hung a huge, flat light on the ceiling with various lighting options. That starts at just under €200.-.
Maybe also think about floor lamps and the option to change things. I don’t really like spots in the living area, I would always be unsure and if necessary, install more and end up with too many. For the money saved, you can build a really great light fixture in the middle of the living room where you don’t have to watch the money.