The positives: Fantastic location, super central. Very comfy bed, good hot shower. Quick and effective communication. Very kindly let us store our bags on check-out day as we had a late flight.
The negatives: Only a few, but did affect our stay a little. As others have noted the flat is quite noisy - the street noise is to be expected due to the location but it actually didn't bother us, however the ceiling is obviously very thin so you can hear absolutely everything going on upstairs and the plumbing which is a little off-putting. The apartment has its own front door but the sliding door into the rest of the property can't be locked from inside the apartment so feels a little un-private. Especially when you get a knock on the door at 10pm to change the main light bulb that was blown already upon arrival at 1pm, and you're already in bed after a long day. The problem was resolved fine the next day but a bit of consideration of our privacy would have been appreciated! The flat has a kettle and crockery and cutlery but no fridge or microwave which can be really useful if you don't want to eat out for every meal.
Overall positives definitely outweigh the negatives but a few extra touches would make the property better value for money.