She is 17 years of age, tall and slim and is always stuck to his side and quite touchy feely with him.
What relevance does the tall and slimness have? Also this is a daughter who doesn't get to live with her dad or apparently even holiday with him. Why shouldn't she stick to his side when she sees him? Would this be seen as an issue if she were younger? Or short and fat?
I did voice my concerns to my DH saying "wouldn't it look a bit strange you and your 17 year old daughter checking into a hotel room together?"
Why would it look strange? Unless someone is adding a sexual element to this? For all posters saying that OP hasn't made it about sex - please can you tell me why it is strange otherwise?
I don't think my husband should be sharing a room with another female adult other than me!
Again, why not? Surely this points to a fear of an inappropriate relationship? What if he slept in the same room as his sister or his mum?
Also, when SD is in our house, it's awkward showing affection to my husband eg a quick hug or kiss with her looking on as she is jealous of her father like I've read most daughters are when living in separate house. She is always nuzzling up beside him!
Sounds like this is op's issue not DSD's. And I notice it's not DSD's house? She must feel very displaced when visiting. And as for the nuzzling, this makes me so sad. I still 'nuzzle' up to both of my parents and will be very sad the day my kids somehow deem it inappropriate. Again, will op's kids be allowed to 'nuzzle'?
Call the replies nasty if you want, this is a nasty thread with upsetting connotations about affectionate parental relationships. I wish wish wish OP could come back and use the responses to maybe amend her thinking. There is no way this could be construed as anything other than an accusation of impropriety.