Apex domains cannot have CNAME records.
Question and response
Question
dig donmanuelhotel.com. NS
Answer
donmanuelhotel.com. 5 NS ns2.donmanuelhotel.com.
donmanuelhotel.com. 5 NS ns1.donmanuelhotel.com.
Authority
The response has no authority records.
Additional
ns1.donmanuelhotel.com. 5 A 65.87.27.172
ns2.donmanuelhotel.com. 5 A 37.48.68.104
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0