"Gdzie jest twój pokój?"

Translation: Where is your room?

[centaurii]

"Twój" sounds like "Foy" to me, is that the correct pronunciation?

[Jellei]

Even if 'w' can be a bit devoiced and sound like 'f', the "t" definitely has to be there.

[AlanGair]

It is, on the end of jest.

[IvesAB]

Can pokój be understood as bedroom as well? Or it is just for some generic room.

[Jellei]

I'd say it's a generic room.

[jamie95713]

Where is your peace?

[Jellei]

I see what you did there, but I don't think it should be accepted ;)

Also, if you really meant "peace", that would rather be "spokój".

"pokój" as "peace" works for "time without war", not "the state of being calm". So it rather can't be 'your'.