For those who don't want to read all the long story in details, briefly speaking we were totally disappointed by apartment's quality and host's hospitality. Photos are misleading as they are probably made few years ago, and host doesn't pay any attention to guests' needs at all - for them it is only about making money from you.
Now let me go into details. First, we asked to check-in 2 hours earlier. Carolina (co-host) said that it is not possible as their other guests are checking out the same day, so they need to clean up the apartment. That is totally fine with us, so she promised to message us when the place will be ready. We arrived at the place and were seating at the cafe nearby waiting for Carolina message. After couple of hours of waiting, we decided to message Carolina and inquire about the check-in. She didn't respond the 30 minutes and then said that the apartment is ready. When we entered the place, it was obvious for us that it was ready hours ago.
Next, we asked to check out 2 hours later - just to store our luggage. Carolina said that they have new guests right after us, so they need to clean it first. I checked their calendar, and the date was not used. So, I messaged that to Carolina and, just for a joke, offered to pay for that night. Can you guess what happened? She apologized that she forgot that new guests are actually checking in next day (!) and offered 20% discount for that night (!). Can you imagine paying 50-60 euros to store luggage for 2 hours? There are places near the train station to store it for 6 euros or so.
Finally, the place itself is very poorly maintained. Though it is clean, the bathroom door knob falls off, some lightbulbs don't work, etc. The design of the second floor is very poor (for example, power outlet is hardly accessible).
Overall, the place WAS good few years ago, but it was not taken care of attentively enough. How can host be not aware of place's calendar, for example? How can host be not aware of knob falling off and lightbulb issues? It just means that they renovated the place few years ago and are trying to collect money with no efforts (leaving all the issues to cleaning company). I personally host people via AirBnb, and I take care of my place very carefully and never behave with guests like that. For example, I always let them leave their luggage at my place, even if cleaning person comes to prepare the place for next guests. That was actually done by few other hosts we had a chance to stay with. Not sure, what was the problem with Carolina...
PS. I typically either write good reviews or no reviews at all, however what triggered me to write this one is Carolina's message after we left her place "...Could you leave us a review describing your experience? If you feel we deserve, do you think you could you give us 5 stars?... We are building a local accommodation management company... We would love you to be part of our growth, and to get to know us a little better!" I really hope to become a part of your growth, Carolina, as I hope you will improve your communication, hospitality and apartment quality!