This mod adds a lot of blocks that make your house and garden a lot nicer. It includes a complete bathroom set - no need to use a stair as a toilet anymore!, big fridges to keep your food (and ores :-)) cold, chairs, tables, sofas, TVs and a huge amount of other decorations, down to a wall calendar.
The doors alone are great already and make your house look much better than the boring standard wooden door. Fences and tables can be used in diffrent ways. Realistic shingles make your roofs stand out and shine. There's even a fish tank can be illuminated! And the garden benches make your parks and roads much more inviting.
The only drawbacks may be that some of the blocks are rather specialized and are not as universally usable as e.g. a wooden stair - and that there are a lot of blocks included.
I've seen many players who immensely enjoyed making their homes nice with this modpack. For me, personally, if a server doesn't have this mod installed then there's something important missing.