We’ve used Air BnB in Germany, Austria, Slovenia, Spain, France and the US. Always good experiences. We are a family of 4, and we like having some space to spread out, a refrigerator and a washing machine.
My tips: look at pictures VERY carefully. Look for pictures of all rooms, especially bathrooms. Often the pictures are of the same room from different angles. Know that the “first floor” in Europe is the second floor in the US. Read the reviews very carefully too. Often time a “dryer” means a rack to dry clothes on, not a machine. If the listing says “double bed” that could mean a US full size mattress (smaller than a queen). Don’t be afraid to ask questions.
Another consideration is that check in/check out times are sometimes more limited at apartments. The owner sometimes has to meet you to give you keys, so will want to know an arrival time. Sometimes they want you to call/text 30 minutes before arrival. If you arrive after a certain time (generally 10 pm) there is often an additional charge.
Most of the apartments we have stayed in appeared to be full time rentals. But one was a obviously the person’s normal residence. If this matters to you, ask.