Hi,
Do you say: "I have seen you have been there or went there, I was wondering if you can answer me a few questions about the hotel" (refering to a hotel)
Thanks
"I see you have been to X Hotel. I was wondering if you could answer a few questions about this hotel."
"I see you stayed at X Hotel while you were in CityY. I was wondering if you could answer a few questions about this hotel."
(You can't join those two sentences with a comma).