Also on Unity Asset Store, with the tiles already set up for use:

Unity Marketplace (Free)	Unity Marketplace (Paid)

Included Tiles:

Free	Paid

The Basics:
3 Wall Designs	9 Wall Designs
Wooden Wall Border	2 Wall Borders
3 Types of Floor	8 Types of Floor
3 Types of Window	6 Types of Window (2 sets of 3)
Red Curtain	2 Curtains
Red Carpet	3 Carpets
1 Table Set (1 table + 2 endtables)	2 Table Sets
Chair and Chair-seat	2 Chairs, 2 chair-seats, 2 stools
Red bed, double and single	4 double and 4 single beds

For the Bathroom:
3 Wall Designs	9 Wall Designs
Toilets, Standing sinks	Toilets, standing sink, counter sink
Up-down bathtub	Bathtubs
gold rimmed mirror	2 small mirror, 1 long mirror
soap bottle and toothbrush cup	soap bottle, toothbrush cup, toothbrush

In the Kitchen:
Wooden Counter set (2 bottoms)	2 counter sets (3 bottoms each)
2 cabinets	2 sets of 3 cabinets (6 total)
Stove, Fridge, Cutting board	Stove, Fridge, Cutting board
Counter sink	mircowave, toaster, coffee maker
-	fruit bowl, salt and pepper shakers

Living Space Luxuries:
Couch Set	2 couch sets
2 bookcases	4 bookcases (2 in 2 colours)
Modern TV	Modern TV
Old-style TV	2 colours of Old-style TV
Standing lamp and desk lamp	Standing lamp and 2 desk lamps

The Little Things:
2 wall paintings, 1 desk painting	4 wall paintings, 1 desk painting, 2 posters
1 floor plant, 1 table plant	3 floor plants, 2 table plants
Wall clock	2 Wall clocks
Open book	Open book, closed book, 2 book stacks
Office chair	Office chair
Laptop	Laptop and old PC
Wall and table phone	Wall and table phone
Small wall shelf	Small wall shelf
-	rabbit plush and bear plush
-	bulletin board
-	trophy and medals
-	candelabra

This asset is can be used in any project, commercial or non-commercial, assuming you have the license for it (free for free version, paid for paid version). You may modify the tiles for your use. Do not resell or redistribute the original or modified tiles.

Credit is appreciated, but not required.