Gave some feedback over discord, will do a full review once some of the initial points are fixed. Overall good start though.

Name: ShowcaseInt
Clean: no, check out this page: https://wiki.project-tamriel.com/wiki/TESAME
For reference, your esp should usually only have “Header” “Cell” and “Path Grid” records
Lighting: good
Northmarker: good
Fits exterior: yes
Pathgrid: unfinished
Illegal to Sleep Here: yes, correct
Gridsnap: good

Bleeders:
- active_de_p_bed_13 (into the wall and tapestry)
- bk_BiographyBarenziah1 (book touching good, but its sinking into the shelf)
- com_sack_gold_rnd (too much bleeding into wall, sacks should just be a bit of bleeding)
- furn_de_p_table_02
- furn_de_rope_03 (#3, the one under the bedroom is poking through 2nd floor)
- ingred_bc_coda_flower (into corkbulb)
- ingred_heather_01 (#2, into blue kanet)
- misc_com_wood_spoon_01 (both)
- steel axe (handle)

Floaters:
- apparatus_a_mortar_01 (For these items with a pointed bottom specifically, Hit F a 2nd time, and let the pointy part bleed into the object below)
- com_sack_gold_rnd (can sink to hide the pointed bottom)
- common_pants_02
- common_pants_05
- common_robe_04
- common_shirt_03
- common_shirt_05
- de_p_table_01_pos1
- ingred_bc_coda_flower (needs 3 points of rest on surface below)
- ingred_scrib_jelly_01
- iron_cuirass
- iron_pauldron_right (both)
- misc_com_broom_01 (handle needs to rest flatly on the wall, also the broom head can sink into the ground slightly)
- misc_com_bucket_01
- misc_com_wood_spoon_01 (both)
- Misc_Quill
- Misc_SoulGem_Common (for both soulgems, you want them to rest flatly on the surface below. I find it helpful to use wireframe view, W button, to see where their flat planes are.)
- Misc_SoulGem_Lesser (see above)
- steel axe (front blade and top of head)
- T_De_Furn_Rug_04 (can sink these type of rugs so the tassels touch the ground)
- T_De_Furn_Rug_23
- T_De_FurnP_Bookshelf_01 (#2)
- T_De_StonewarePitcher_01
- T_IngFlor_BlueKanet_01
- T_MwCom_Var_Sk1Corkbl05 (just needs a little sinking)
- T_MwCom_Var_Sk2Corkbl05 (see above)
- T_MwCom_Var_Sk2IngNars (ditto)

Other:
- de_p_table_01_pos1 next to the table could be replaced with the flat TD version
- furn_de_tapestry_13 all tapestries in Hlaalu interiors should only bleed into the plaster, not the wooden beams. Also, for consistency, you should have all tapestries on a floor have the same Z position.
- in_hlaalu_room_post pieces are caspering into the corner pieces, this is because you have a room type stair leading to a hall, you can fix this by swapping some of the hall pieces to room pieces. You can connect room pieces with hall pieces by use of the “room_door” pieces for the bed/door tiles.
- light_de_lantern_04 is casting greenlight on the ceiling (on the rope is ok, sometimes its unavoidable). This can be fixed by moving them, but I would recommend using 128 versions instead.
- light_com_lamp_02 is imperialized furniture, use a light_de_lamp instead. Also it is casting greenlight on the doorframe, so I would recommend using a smaller light radius version too.
 

Name: ShowcaseInt
Clean: yes
Lighting: good
Northmarker: good
Fits exterior: yes
Pathgrid: good
Illegal to Sleep Here: yes, correct
Gridsnap: good

Bleeders:
- active_de_p_bed_13 (into chest)
- ingred_bc_coda_flower
- misc_SoulGem_Common

Floaters:
- ingred_bc_coda_flower (needs 3 points of rest on surface below)
- misc_com_wood_spoon_01 (both)

Other:
- light_de_lamp_01_128 is casting greenlight, should be moved slightly away from the wall