Dear Alan,
We’re on holiday in Dublin this week. Our hotel is very nice – old [bad word]  The people are very friendly, and the food is delicious. Irish music is good, and the beer is lovely! 
Dublin is beautiful. It’s a big city with a lot of old buildings, and it isn’t expensive. The weather is horrible!  It’s wet and it’s cold.
See you soon.
Love. Dona and Sergio (your Italian students).