Aard "lives" in Hjerim, in fact he moved in after killing the Butcher and not being appropriately rewarded for his service to the community so he decided not to return the key to the manor. He doesn't spend much time there and mostly uses it for sleeping but for him it's the closest to what counts as home in Skyrim.
Hjerim is mostly unfurnished but Aard brought some furniture from the Aretino's Residence and from the House of Curiosities. Let's have a look at his cold home:
This is the
main hall which is completely unfurnished except the candlestick which he brought from the Aretino Residence so he can see where the lock on the door is.
This is what counts as the
kitchen in Aard's Hjerim. He brought his favorite chair from the Aretino Residence while the table, the dining chair and the cooking pot are from the Butcher's house. He hasn't used the cooking pot yet and the goat leg has been lying there for days. Aard mostly uses the kitchen to warm himself because it's the warmest room in Hjerim, you can see him sitting in his favorite chair.
This is once again the
main hall from the other perspective, except the lantern which he brought from the Butcher's house, there isn't anything of interest. This
room served as the Butcher's sacrificial room but Aard managed to clean it of bones and blood. He doesn't use the room but he prefers it without bodily remains.
Moving upstairs we come to another long
hall, unfurnished except the lantern. The
bedroom on the left is the most furnished place in Hjerim, because most items have already been there when he moved in. There is the Aretino family heirloom on the floor, while on the table you can see the semi-rare fur helmet, another lantern and the flagon. The note on the floor is the "We know" message from Astrid while the chest next to the bed is empty except for the key to the White Phial. The
second pic shows the small wardrobe with merchant's clothes on it which were never worn, at least not by Aard. Next to the clothes are some flowers which Aard bought from Sophie but they're not seen clearly in the pic.
EDIT: Taking items and bringing them to Hjerim was achieved by Jaxonz Positioner Mod which allows you to take even statics with you.
This post has been edited by Lopov: Mar 18 2015, 10:53 PM