The bill seems correct to me.
cor-RET-to — three syllables, stress on the second.
After reviewing the bill, confirm to the receptionist that everything is in order before paying.
'Mi sembra' (it seems to me) softens the statement slightly — it is a common Italian conversational hedge. The simpler 'Il conto è corretto' is also perfectly correct. Confirming the bill before paying is good practice in any language.
Sì, va tutto bene.
Yes, everything is fine.
The simplest confirmation that you accept the bill
Aspetti, devo controllare una cosa.
Wait, I need to check something.
Use when you notice something that needs clarification before paying
Posso avere un momento per controllare il conto?
Can I have a moment to check the bill?
It is perfectly acceptable to take time to review an itemised bill
Always review your hotel bill carefully at check-out. Common extra charges include minibar items you did not consume, telephone calls you did not make, and spa or parking charges that should have been pre-paid. Corrections are much easier to make before payment.