2 Castle Street is in a perfect location to explore Edinburgh. It actually faces out over Princes Street, directly overlooking the castle. That said the flat is well insulated from any street noise. The flat is comfortable and warm, with modern kitchen and lovely bathroom.
You are located amongst the Old Town with plenty of pubs and restaurants steps away. we enjoyed exploring Rose Street and the shops on George Street.
It is about a 10 minute walk up the hill to the Old Town with the Royal Mile, Castle and museum. We also walked to the Parliament and Holyrood Palace.
The journey from the airport to Princes Street is very easy (£9 return).
We would definitely stay again.