First of all, I would like to note that - as far as I know - this offer represents more than one apartment (what could be slightly confusing at first), and I was offered one in Mainz-Bretzenheim. So, this opinion is on that very apartment, where I spend a month. The location is very convenient, close to the tram/bus stop, shops. Only with east winds, you will have plains approaching Frankfurt airport every minute (or two per minute) between 4 a.m. and 11 p.m. at the altitude of 1000 m. I was not that much bothered by that. The apartment is appropriate for one person, with a bathroom and kitchenette with utensils, table, TV (I did not watch it), router (WiFi was not always stable). It was quite clean when I arrived. There is a laundry room in the building as well (which in my opinion results in humid and a bit stinky air in the building). The overall opinion of the facility is 'good'. What I appreciate the most was the very good contact with the host: quick responses to messages, punctuality at arrival and departure, absolutely nothing to complain about. All in all, I have a positive impression of this offer. Thank you. I may return.