First off, I must say that your lighting is getting much better. This is a huge improvement from the first screenshots I saw! It may be a little bit dark for a screenshot but as an in-game map, the lighting levels are perfectly fine given that there are no windows or other light sources around.
The layout of your room seems a little bit larger and empty, even with the table in the middle. Try throwing a rug under the dining table to fill the room a little bit more (found under static objects -> ornaments -> carpet). Perhaps a chandelier on the ceiling (unlit or lit - I'm assuming you want the area dark, so unlit is probably the better option) and some candles on the table would make it look a little bit less empty as well.
You've done a nice job of making sure the chairs at the tables don't all appear the same. It's nice to see you're putting effort into making the room look less monotonous. When you're rotating objects, click the little magnet button in the corner - it gives you more options for rotating the object than just every 15 degree angle (15, 30, 45, 60, 75, 90 etc).
The walls/decorations in general: this is a dining room (from what I can tell) meaning it's going to be a room which would have, at some point, housed a lot of guests. The owner of this house would have put everything s/he was proud of in this room - artwork on the walls, mirrors, candles, maps, portraits, pianos, violins, phonographs, vases, ornate rugs, etc. - for the guests to look at. Any sort of room where guests would be entertained - dining rooms, guest suites, conference rooms, ball rooms, entrance rooms - tend to have the most extravagant decoration. Rooms like bathrooms, kitchens, corridors, libraries, archives, and servant quarters will have minimal - if any - decoration. Along with this, any damage that occurred to these more decorated rooms prior to abandonment would be repaired or at least covered immediately to avoid displeasing aesthetics.
With that, I'm not entirely sure what the object in the far right back corner of your room is. If it's a fridge, perhaps it would be better suited to a kitchen?
I know I said a lot, but the majority of this room looks really really nice. I just worded everything a little bit complicatedly and ended up making it seem like more than it really is. In other words: you're getting better!