I booked a stay weeks in advance, and the night before, when check-in instructions were sent, the flat address was different than I had booked. When I messaged them they said they had “upgraded” me to a different flat. It was by no means an upgrade; I went from a ground floor flat to a top floor (with more stairs than I could even count- it was a work out getting my suitcase to the top), it lacked the high ceilings, fireplaces, and open feel of the flat I booked. Also it was listed as the same price per night, so hardly an “upgrade”. It was completely unprofessional for them to change my booking last minute without even informing me. They offered a full refund, but at that point it was too late to find another place to stay. I would expect more for spending over £600.