Never used that. The name is misleading at best. There are no B&Bs on offer that float in the air and there are no breakfasts either. It's mostly and simply flats that their owners offer for10 times the rates they pay monthly. The bulk of it nowadays are normal flats split down into single rooms for the purpose of renting them out. The original suggestion that those are flats that get rented out occasionally and you are slipping into the cheesy role of the owners using their private facilities as if they are yours gets more and more extinct.