Sofia was kind and precise with the informations about check in and check out.
The apartment is in a very quite and confortable position, pubs in Prague 3 are cheaper than the centre and there is a good choise nearby home.
To move we used the underground, the nearest station is 10 minutes walking, but there are also tram or bus nearby. Anyway, the city center is just 3 km and on morning we used to go on foot.
The apartment is little and cute with 2 separated single bed, I was travelling with a good friend and it was perfect for us. The kitchen is functional and the bathroom has a very big shower.
Sure I will come back.