This is a wonderful, well furbished apartment located conveniently 2 stops (no more than 7 mins ride) away from the metro station. The place will be even better once construction works at the neighbouring house will be completed and the swimming pool is opened (which as at the middle of June was still under construction).
The check-in is very convenient - you can collect the key from the lock-up box at the entrance and let yourself in. Same with the check-out - just return the key where you took it.
I had no problem whatsoever using the apartment amenities though at first I was worried I would not manage it without being shown around, so the fact that you self check-in is no problem at all.
One has to note that the apartment is facing quite a busy road (4 lanes + tram) and it is a little bit loud from the street, so don't forget your earplugs (but they failed at times).
As already mentioned the neighbouring house is being constructed so sadly this also adds to the noise. Be sure to check the current construction state with the host before you book. I did not read all the way to the bottom of the House Rules (which was where this info was mentioned) and this turned out a rather unpleasant surprise which is a pity because the apartment really is great.