It’s not simple, I’m trying to figure out how to have max 1 wall/floor between things and mostly perpendicular signal relative to walls. And also, make sure you spend most of the wifi time on wifi AP that’s in the same room if possible. It’s hard with your blue spots setup that way.
Your living room will get better coverage from bedroom1 than it will from dining room wall AP, for example.
Kitchen should be better covered by ceiling AP in the dining room, than dining room wall.
Dining room ceiling will cover bedroom 2 really well, bedroom 1 probably no more than 300-Mbps depending on what your client is. If you work from bedroom 1 (home office type of thing, or kids/bedroom/study type of combo), then, in wall is a good option.
Your lower bathroom, will be meh, either way, conservatory will probably be ok from dining room ceiling as long as you don’t close the door, the only way to get wifi there with your arrangement is through the door and reflection off of kitchen floor, that’s not good.
Assuming your conservatory goes into the garden, and you want wifi in the garden here’s an idea.
When you’re up in the loft/rafters, if you have roof eaves over conservatory, consider sticking a U6-LR outdoors, that should cover the gardeb nicely and maybe even the conservatory.
Anyways, bedroom 1 – of this is a study/mixed bedroom office, get a switch and u6-lr and a gigabit injector there.
I’d consider moving dining room ceiling AP to the kitchen.
That way you’ll cover most of the house with 2 APs.
If money is less of a concern, one AP on the living room ceiling, one on the hallway ceiling between bedroom 2/3. And one at the conservatory entrance.
That covers your with 3, and you get a bit more garden coverage.
— looks complicated (e g. why not do ethernet to your living room TV.