In case you are thinking travel to Ireland, you must consider the current rules and restrictions to access Ireland due to the COVID pandemic situation. All the content below is from Citizens Information site.
A brief introduction:
Ireland is at the highest level of COVID-19 restrictions. You should not travel to Ireland unless you have an essential reason for your travel.
If you have to travel to Ireland, you must have proof of a negative or ‘not detected’ COVID-19 Reverse Transcription Polymerase Chain Reaction (RT-PCR) test taken within 72 hours of your arrival.
By law, you must quarantine when you arrive into Ireland. This applies for all arrivals from 4 February 2021. It does not apply if your journey starts in Northern Ireland – see ‘Do I have to quarantine ’ below?