The place to get the key and the apartment is quite far (in case you have to carry all ur luggage along with you..it is not that fun)
The location of the apartment is good, easy to walk to old town sq. but it's quite noisy at night because there is pub&restaurant opposite the apartment. If u r the light sleep, u should bring ear plug.
The check-in time is "STRICT", no earlier time to get the key. It's the condition for staying here but if this can be more flexible, It would be convenice to the travellers that they can leave luggage and go travel around the city.