The best thing about this place is its location. Almost every tourist spot is a 10-15 minute walk away. Nevertheless, if we were too tired, we used the metro (General Torres stop is just around the corner) and we also saw that there was a bus that went from the city center to the apartment.
Check-in and check-out are easy and Miguel was fast to reply our questions. The only issue we had was that the remote wasn't working and we never got the batteries he promised to make it work, so we had to use the TV buttons which has a bit of a hassle.
Aside from that, the apartment is very nice and comfortable, just as in the pictures. The beds are super comfy, but we didn't like de pillows, although it is a personal preference.
The only downside of the apartment is the noice. You can hear everything that happens inside and outside of the building, so if you are a light sleeper and don't bring earplugs like us, you won't get much rest.