This is about various rooms in a house or apartment.

Dnevna soba - daily room - what you'd call living room (one room for living, others for not...?).

Spavaća soba - sleeping room - bedroom.

Gostinska soba - guest room. Bedroom for guests. Nowadays rather extinct, for several reasons. First, most of the people don't have spare rooms, being in a novogradnja and all. Next, they don't visit each other as much as they did before - the communications are rather electronic nowadays (various chat apps being quite popular, specially Viber), and then even when they visit, it's not the old ways anymore, you lay your guests to sleep where you can. Besides, the guest rooms that I remember (in the sixties and some way into seventies) were all smelling of mold, rarely aired and never heated.

- kupatilo - bathroom - see there

- trpezarija - dining room - literally from greek word for trapese, which meant a bench (or, later, also a bank). A dying species, except in institutions. If it exists in an apartment as a separate room or space, it's either part of, or seemingly divided from the kitchen, by some movable partition.

- kuhinja - kitchen - would probably merit its own article. Nowdays there are several philosophies in this regard, namely whether it should be a niche of, or somehow connected to, or integrated with the dayroom. Because many people feel more at ease when sitting in the kitchen, having a coffee with a neighbor etc. Few have built kitchens/dining rooms as separate rooms, and later complained of how they fucked up. Serbs just love to live in the kitchen.

- špajz (aka ostava) - pantry. Should be accessible through a door from the kitchen, should be cold, should have shelves, should be aired. Lucky people manage to get three of the four.

- predsoblje - anteroomium (literally translated) - lobby. The place where you leave shoes and hang your coat before entering other rooms. Connects main entrance with most of other rooms, one of which is necessarily the bathroom - as strongly recommended by domestic education over a few generations, to wash oneself from outside dirt, before entering the rest of the rooms (which then stay clean longer). Coathanger, shoeshelves, umbrella stand. The room with triple switch with little lamps on them next to its door's frame is the bathroom. Once you learn how to spot that, you'll never have to ask where the bathroom is.