Sunlight and woodfloor. Help!

[luizamms]

Hi guys, nice to meet you all!
I'm quite new here... And facing some troubles, and as always watching some videos to improve rendering quality

My latest image, im using the default's keyshot sun&light HDRI for lighting the interior scene
On the floor, I set the diffuse, bump, and roughness map as the same texture... bump level 0.2, refraction something between 1.4 (a test rendering going on, can't see now exactly..)

I'm a truly beginner.... There's some kind of noise on the floor, I guess it's because of the outdoor HDRI sunlight setting, but i'm not sure
Wanna know, what do you thought this could be.. Thank you, very, much! 

(oh yeah, i've seen the floating sofa, new market trends)

[Will Gibbons]

How was it rendered?

Likely, the sampling wasn't high enough. Either increase samples (if using max samples mode or advanced), or let it render for longer if using max time.

If that doesn't help, double-click the wood material and see if you can increase the material samples (expand the triangle next to Roughness parameter to access). If you don't see the triangle, change it to a material such as plastic transparent to do so.

See if those help.