TLDR: Vincent (host) is very helpful and has an incredible place, clean & spacious at a lively location in the heart of Kreuzberg. STRONGLY RECOMMENDED!
I can only recommend a stay at Vincent's whether you are looking for a short stay (maybe a couple of days, visiting as a tourist) or if you are looking for something more long term (like more than a month). Without hesitation, I can state that you'll be pleased with your stay.
I lived for about two months at Vincent's place before I found a permanent apartment in Berlin. In fact, Vincent helped me find out a new place connecting me to one of his friends. Overall it was a great experience, the apartment is chic, and the room is spacious and clean. The main reason why I chose this apartment was due to the central location and excellent public transport connectivity (U Gorlitzer Bahnof Train Station is just 50m from the apartment) with the city. You can also find tonnes and tonnes of restaurants/bars to hang around within less than 5 minutes of walking from the apartment. The whole atmosphere around the apartment is lively, and I enjoyed my weekends while working on weekdays.
Kitchen: Vincent has all the kitchen utensils, and you can pretty much find everything you might need if you are into cooking.
About the host: I had some intelligent conversations with Vincent, who comes across as a very kind and knowledgeable person who you can trust as a friend. We had many interesting discussions about cryptocurrencies and more technical stuff, which I thoroughly enjoyed. He helped me with numerous questions about Berlin, and he had the right answers for almost everything. He also allowed me to use one of his guitars. Easily the best Airbnb host I've met to date.
Ps. I work as an Applied Scientist (IT) and WFH most of the days. I really appreciate that the room also had a small monitor that I could use as an extended display with my laptop.
PPS. I also got my Anmeldung at his place. I just wanted to share that since I know that it is one of the problems many people face when moving to Berlin.