check in/out was really simple, the host was very nice and easy to communicate, contact with.
It will be a perfect place to stay if you are 3-4 persons.
the apartment is very well equipped ; full equipped kitchen, many hangers in the wardrobe, good washing machine/ dryer, and well working hair dryer ;)
The place is quiet, really closed to national museum, and Wenceslas Square.
I would suggest asking Mira for the directions, if you want to walk from the main train station to the place.