There were two (uneven) sides to our stay, which lasted a whole month.
The location was great, and we had access to top gastronomical proposals without hassle.
The flat is as it looks like in pictures (with the exception of the sofa, more below); it is spacious, clean and the shower water pressure/temperature is excellent.
When we were about to leave, management kindly helped us by extending our check-out time to 12pm.
It is hardly an option, however, unless you are a hardcore party animal that can sleep on and through just about anything.

Although we had rented the house for three people, there was no way our guest could have slept on the sofa bed, which was nothing else but a lumpy spring frame. When we complained, the sofa was exchanged with one that was as bad but dirtier. In the end, only two people occupied the house, and we were not reimbursed the difference (management assured us the sofa “was very comfortable” and agreed to refund unused nights on the condition we leave within 24 hours).
We practically had no wifi the first couple of weeks and could not work or pursue our routine properly. The flat does not have an individual router so when the building is full, you are made to suffer the consequences. Our complaints were received with "how strange", "you're the only ones", "check again"...
The flat is as though made of paper walls. We had to endure the loud music and movement of neighbours at all hours of the day and night like they were in the next room. The smell of smoke had also permeated our bedroom at several occasions through the emergency exit staircase. No matter when or how much management intervenes, this will remain a problem until they decide to properly insulate each unit.

The lift needs overhaul; it broke down a few times and I got stuck in it once.
Last but not least, Boutique Apartments has a gaslighting corporate style that makes it impossible to move forward with decent or liable solutions. They also don't have a representative we can actually physically talk to. Previous guests have complained about most of the above and have only been shunned by them.
Also, Airbnb should not hide behind their 24 hour cancellation policy and enforce greater treatment/service by all parties involved.