I really hate to give bad reviews but unfortunately in this case it must be done. I will start with the positive things first: Julien was a flexible host and was ok with earlier check-in. He was always polite during communication. The location of the apartment is nice and there are several bus/tram stops around, cafes, restaurants, supermarkets, etc.
Now onto the negative things which far outnumber the positive, unfortunately. First and foremost, the biggest issue for me was the level of cleanliness in the apartment. The condition of the apartment when I arrived was shocking. There was hair, food bits, dust, etc. all over the floor and carpet. On the bedsheets I found a stain of what looks like blood!! When I removed the sheets, I saw that the mattress was COVERED in stains (also looks like blood stains). The sofa in the living room is also covered in weird stains. The garbage bin in the kitchen had bits of food stuck to the bottom. The bathroom was terrible; toilet bowl was brown and unclean and there was little hairs on the walls. There was a pair of unknown underwear in the washing machine as well. There are many other little things that were not clean also but they're too many to go into. In short, the apartment was very, very dirty.
When I told Julien and sent photos he apologized and sent someone to clean right away. Unfortunately, nothing changed. When the person came to clean (I was at work at the time) they only vacuumed the floor and cleaned the surfaces, which is great except everything else remained the same way (garbage bin still has food bits stuck in it, stains all over the bed/sofa still there, bathroom/toilet not cleaned whatsoever, etc). I had booked a 1 month stay and I did not want to stay all that time in this apartment because I was really uncomfortable with how dirty it was. When I asked Julien to refund the rest of my stay so I can leave, he declined. Instead, he said he can give me 200 CHF as "compensation". Keep in mind that this was on day 6 of a 1 month stay where I had already pre-paid 2500 CHF to book the place. I still had 3 weeks left in my stay and he thought 200 CHF was fair. Of course, this was not a solution for me because I cannot find another airbnb/hotel for the remaining 3 weeks with these 200 CHF. I tried to negotiate for a while and then he started completely ignoring my messages.
Which brings me to the second issue: communication. Julien ignored my messages twice: once when I asked to retrieve a letter from his mailbox, he answered 3 days later. And he only answered because I had complained to Airbnb and they reached out to him. Second time he ignored my messages was when I was asking him to refund the rest of my stay so I can leave. He simply never answered me which is frankly totally unprofessional. If your guest is asking a question, you should always answer them. These are basics.
So voila this is the summary of my 1 month stay in Julien's apartment. I cannot recommend this place to anyone, unfortunately. I was so disgusted and uncomfortable during the entire stay. It really makes me wonder why the host charges guests a cleaning fee at all if this will be the state of the apartment when the guest enters it.
P.S. the walls in the building are paper thin. I could hear literally every single thing the neighbors are doing. And I mean literally. Of course this is not the host's problem but I mention it as it is one of the many things I found uncomfortable during my stay in this apartment.