1) Fireplace: SKU: AKDY1462
91cm W x 43cm H x 10cm D
46765 polygons (2216 polygons without crystals inside)
https://www.wayfair.com/furniture/pdp/akdy-3-in-1-3d-flames-wall-mounted-electric-fireplace-akdy1462.html 

2) Wall Sconce: WL-2283
20.5cm W x 49cm H x 13.5cm D
12980 polygons
https://www.homedepot.com/p/Fifth-and-Main-Lighting-Hipster-2-Light-Bronze-Brass-Up-and-Down-Wall-Sconce-with-Glass-Shade-WL-2283/  304647831? cm_mmc = Shopping% 7CG% 7CBase% 7CAll-Products% 7CAll% 7CAll% 7CPLA% 7c71700000014585962% 7c58700001236285396% 7c92700010802552421 & gclid = CjwKCAiA0O7fBRASEiwAYI9QAkkLxf5cycN3fGV6DgTDKzsnIdXKBmaYZxBF_LN73xBLcpjjqTk2HxoCvLMQAvD_BwE & gclsrc = aw.ds

3) Tiles: JW 12 ST SQ
Tile dimensions: 30cm x 60 cm
https://www.tilelook.com/en-GB/users/mirage-ceramics/tiles/jw-12-st-sq-30x60-30x60x9