I rented a 2 BR, 2.5 bath with a wonderful view for the nights of Sept 16 and 17. On Sept 14, 24 hrs before the cancellation deadline, the host notified me the unit I rented would not be available but that we could stay in two other apartments in the same building, one on the 16th and one on the 17th. I was assured the value was the same, that they were top notch apartments. We chose to take our chances rather than disrupt our vacation to search for another place prior to the cancellation deadline.
Neither apartment provided the same value. The first apartment was a 1 BR, 1 bath and it did have a great view. The second was a 2 BR, 1 bath but only one bedroom was available to use as there were no linens in the master bedroom. And it was on the ground floor, with no view. So, after renting a 2 BR, 2.5 bath unit I ended up with a 1 BR, 1 bath apartment both nights.
The host said the unit provided for the first night was her own apartment, but there was a guestbook on the table indicating other guests had stayed there earlier in September. I imagine my request to not have to move from one apartment to the other on successive nights was because the unit was rented, not because it was the host's apartment.
The host attempted to make our move from one apartment to the other easier by telling us we could stay in the first night's apartment til 11:30am rather than vacating by 10am, then move to the second apartment. We cut short our sightseeing so we could switch apartments by 11:30, but the second apartment was still not ready at 12:40pm.
On top of this headache, check-in instructions said remove the trash each day by carrying it to one of two bins a few minutes walk from the building. No directions were provided, just a general description of where to go. There were no trash bags in the first apartment so this would have meant lugging the trash can through the city streets.
The apartment is in a great location, but because it's in a parking-restricted area you will have to park in one of two nearby garages where it will cost 45-75 Euros per night (ours was 60/night for a small Audi).