I’m trying to build my teen’s bedroom and she only has room for a single bed and the only three Excellent beds are kid’s beds…
Please Help, this furniture quality not only limits us to never use all the good looking furniture, it’s also making it impossible to build a small teen or single adult bedroom.
I love all of the Cahaya furniture and now I can never use it because it’s not Excellent 
Agreed, the only kid’s beds who are excellent are not “plain” single beds.
We need a plain single bed which is excellent as well, agreed.
Maybe give us an option to “upgrade” our favorite furniture by clicking it and selecting… “upgrade”
Each upgrade could cost like 200 mew (maybe even 500), but would raise quality by one notch.
Using that you dont need new beds/new graphics/or clones of existing beds.
And you can upgrade fridges, beds, chairs/sofas, computers even.
It would solve all of this issue with minimal effort from the devs.
Exactly a bedframe does not give good rest, a good mattress does, which is why I thought why not let us buy any furniture or appliances and upgrade them, this would allow us to use any fridges, toilets, beds, ecc, ecc. 
I noticed this as well - almost all the adult single beds seem to be ‘Below Average’ performance. Another balancing issue. You can create custom beds but they don’t seem to have a performance rating, and the one I made is bugged.