"Twój" sounds like "Foy" to me, is that the correct pronunciation?
Even if 'w' can be a bit devoiced and sound like 'f', the "t" definitely has to be there.
It is, on the end of jest.
Can pokój be understood as bedroom as well? Or it is just for some generic room.
I'd say it's a generic room.
Where is your peace?
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'.