Short review:
++ We had a pleasant 2 week stay at the well-situated, comfortable flat.
-- We had some minor problems (construction noises, washing machine, shower parts broken).
Long review:
We booked the flat for 2 weeks for a work-related stay. The flat is very well situated in the center, with a good supermarket really close by.
Niklas was flexible on check-in time and answered quickly.
However, his answers were sometimes unhelfpul, and misunderstandings happened several times (perhaps due to English).
The flat was clean, comfortable, well lighted, warm, with a working lift and with good internet (no TV).
However, we encountered a number of minor problems:
First, the instructions given to us by Niklas via pdf regarding the washing machine were partly inaccurate (wrong location in the building of the washing machine+no keys to access it).
We had not been given the keys to the washing machine (it took four days and many messages for Niklas to send it to us).
Niklas also did not know were to locate the washing machine room (we had to ask the neighbors).
Second, the shower door did not fully close when we arrived (the handyman came 3 days before we left) and the shower tube was broken. Those were minor problems since the shower worked.
Still, I had to report it the day I arrived, to indicate that this wasn't caused by us. Niklas later indicated that previous guests had also notified him of the problem, but that for some reason unclear to us, he had/could not taken action to fix it before we arrived.
Third and more problematically, the building was undergoing construction works during our stay, a fact which had not been disclosed when we booked. This led to construction noises during the day and weekends, which was sometimes a nuisance when we worked from home.
We even were awaken one Saturday morning by construction workers who had to briefly enter and operate in the flat.
I wished that we had been informed in advance that such disruption would happen. Niklas kindly offered to compensate us for the nuisance as a result.
To improve customer experience, I would recommend that the host be more transparent on disturbing events such as construction works, and do an in-person check-in, which would make it easier to familiarize oneself with the facilities, and to notice if some things are already not working or missing when new customers check in.
With this in mind, I'd still recommend staying at the flat, and will consider booking it again in the future.