This beautiful garden is open to the public with a fee, but its access is free to the guests of the hotel Aria. You can enter with your room key if you are hotel guests. It is nice to be able to do that in the hours before it opens and closes to the public.
We stayed in the hotel several times and enjoyed the view into the garden very much. The view of Prague from the very top is amazing, you have to climb a hill and walk up some steps, but you get some great pictures and exercise that way. The garden holds many memories for me as I used to come here many years ago, when I lived on Mala Strana. There was no hotel here then and the garden was not as beautifully manicured, but peaceful nevertheless. Without the tourists in those days, it was mostly visited by locals.
While we were staying in the hotel we could see young brides posing for pictures, many travel far to get married in Prague.
This is a small garden, worth stopping by if you are in the area. It is I believe on the UNESCO World Heritage List . It is very close to two beautiful churches - St. Nicholas Church and the Church of Our Lady Victorious - Holy Child of Prague (Prazske Jezulatko).