Uwekaji nafasi una bei ya chumba.

Uwekaji nafasi is a noun phrase built from the verb kuweka nafasi.

• kuweka = to put, place, or set
• nafasi = space, place, slot, opportunity

In many contexts, kuweka nafasi means to reserve / to book.
Then uwekaji turns the action into a noun, so uwekaji nafasi means reservation or booking.

So the structure is roughly:

• kuweka nafasi = to reserve
• uwekaji nafasi = reservation / booking

Yes, literally nafasi often means space, place, slot, or opportunity. But in this expression, it is used in the sense of reserving a place/slot.

That is why kuweka nafasi can mean to make a reservation or to book.

So this is a good example of how the literal meaning of a word and the natural meaning of the whole expression are not always exactly the same.

Una is used because the subject uwekaji nafasi takes u- agreement.

Here, una means has.

So the sentence structure is:

• Uwekaji nafasi = the booking / reservation
• una = has
• bei ya chumba = the price of the room / the room price

So literally, the sentence says something like:

The reservation has the price of the room.

In more natural English, that may be understood as:

The booking costs the room price or The reservation is charged at the room rate, depending on context.

Good question, because una can look like you have to an English-speaking learner.

But here it means it has, not you have.

Why?

Because the subject is already stated: Uwekaji nafasi.
So una agrees with that noun, not with you.

So in this sentence:

• una = it has / has

This kind of ambiguity is normal in Swahili, and context usually makes it clear.

Swahili often expresses this idea with kuwa na bei — literally, to have a price.

So:

• ina bei = it has a price
• una bei = it has a price, with u- agreement

This is a very normal Swahili way to talk about cost or price.

English often prefers costs, but Swahili commonly uses has a price or similar structures.

Bei ya chumba means the price of the room or the room price / room rate.

Breakdown:

• bei = price
• ya = of
• chumba = room

So this phrase means the amount charged for the room.

Depending on context, a natural English translation could be:

• the room price
• the price of the room
• the room rate

Because the connector agrees with bei, not with chumba.

In Swahili, the of word changes to match the noun that comes before it.

Here the head noun is bei (price), so the possessive connector is ya:

• bei ya chumba = price of the room

It is not based on chumba.
That is why cha chumba would not be correct here.

This is a very common thing for learners to watch for: the connector agrees with the first noun, not the second.

Swahili does not usually use articles like a, an, or the.

So:

• chumba can mean a room or the room
• bei ya chumba can mean the price of a room, the price of the room, or room price

The exact meaning depends on context.

This is normal in Swahili, and learners usually have to get used to understanding definiteness from the situation rather than from a separate article.

Not in exactly the same way.

• kuweka nafasi = to book / to reserve (verb/infinitive)
• uwekaji nafasi = booking / reservation (noun)

So if you want the subject of the sentence to be booking/reservation, the noun uwekaji nafasi is appropriate.

If you used kuweka nafasi, the sentence would feel more like using to book as a subject, similar to English To book has the room price, which is not the same structure.

So the difference is basically:

• kuweka nafasi = the action to book
• uwekaji nafasi = the noun booking / reservation

Because uwekaji nafasi works as a set expression meaning booking/reservation.

A learner might expect something like uwekaji wa nafasi, and in some contexts Swahili does use wa to link nouns. But here the expression is functioning more like a compound based on the verb phrase kuweka nafasi.

So it is best to learn uwekaji nafasi as a whole expression.

In other words, don’t try to translate it word by word too mechanically; treat it as the standard noun form related to kuweka nafasi.