My friends and I recently stayed in the apartment and it generally had everything we needed for our visit, it was clean,spacious and very secure with the locks outside and on the front door. Communication was great, any queries we had were responded to very quickly.
Unfortunately the windows and doors aren't sound proof at all, you can really hear the traffic outside and we all found it difficult to sleep even after a few drinks! The lift to the apartment was temperamental and the door wouldn't open on the 4th floor so we had to go to the 5th and walk down which wasn't a big deal for us but might be for anyone claustrophobic especially when the light in the lift turns off. The lights on the stairway also turn off after a minute so we were using torches on phones to go done the spiral stairwell.
The area itself felt pretty safe and I'd recommend trying the local cafes and bakeries as they were really good and people were very friendly.