question about relative adverb!!

[ju.ilkyu]

Please take a look at this sentence.

I stayed at his house for a week, (_________) I received a letter from my girlfriend.

Which relative adverb should be in the brackets?

I think where should be in, but in my grammar book, the answer says when should be in the brackets.

Help me.

[bhaisahab]

Please take a look at this sentence.

I stayed at his house for a week, (_________) I received a letter from my girlfriend.

Which relative adverb should be in the brackets?

I think where should be in, but in my grammar book, the answer says when should be in the brackets.

Help me.

"Where" works, so does "then".

[ju.ilkyu]

"Where" works, so does "then".

Thank you very much!

So when is incorrect. Did I get it right?

[bhaisahab]

Thank you very much!

So when is incorrect. Did I get it right?

"When" could fit as well.

[birdeen's call]

Please take a look at this sentence.

I stayed at his house for a week, (_________) I received a letter from my girlfriend.

Which relative adverb should be in the brackets?

I think where should be in, but in my grammar book, the answer says when should be in the brackets.

Help me.

Please write

I think "where" should be in, but in my grammar book, the answer says "when" should be in the brackets.

The quotation marks make the sentence easier to understand.

[emsr2d2]

To me, for "when" to make sense it would need to read:

I had been staying at his house for a week when I received a letter from my girlfriend.

I think "where" and "then" make sense with "I stayed at his house..."