Client transfer

This is all hypothetical, but I’m looking for advice and feedback.

I have had a client book 3x through the Rover app. They have requested I stay overnight with their pets, but I currently do not offer those services on the app and don’t feel comfortable being requested to stay in random people’s homes. However, I have already gotten comfortable with this owner and their pets, and wouldn’t mind doing this for them solely. They have never mentioned moving off-app and I don’t recall ever getting their personal contact info, though I know they have mine.

Should I update my rover profile to include overnights while blocking off all the other dates besides their booking time

Or should I leave a note the next time I’m with their pets that includes my info and offering them a better rate off the app

Again, all hypothetical, and if this is a big no-no then please advise.