To rephrase the sentence 'I would definitely go there again but only when it's not busy' using a different linking word, you can say:
'I would definitely go there again although only when it's not busy.'
Other options include:
- 'I would definitely go there again if it's not busy.'
- 'I would definitely go there again provided that it's not busy.'
- 'I would definitely go there again as long as it's not busy.'
This way, you use different linking words (also called conjunctions) to connect your ideas clearly!