This is an old apartment, and you have to share a kitchen and bathroom with the other two guests. It may be suitable for a short stay but not for long term (more than a week) stay. Once an apartment or bathroom gets dirty, nobody cleans for you. It remain dirty until you become the maid of the apartment. The same thing happened to the refrigerator and kitchen sink.
Most importantly, you will not get a proper bed or comfortable mattress. Marie will provide you with an air bed without a matress. So, you need to fill the air every day so that the bed does not collapse and you get better sleep.
Briefly, you are not a guest, and Marrie is not a host here (definitely not a super host). You are a tenant in a monthly rented apartment.