I think maybe that was a typo, and Heidi meant steep hill? There was definitely an old building with "hotel" in big concrete letters on the front of it, which has now been converted to flats, but I'm not sure whether that was the East Dulwich Hotel. That's where you're talking about I think PeckhamRose, just off Lordship Lane to the right (as you're heading down away from the Harvester towards Goose Green). Can't think which road it's off, but maybe Overhill? Certainly around that area somewhere. I'd think that would count as East Dulwich, definitely still an SE22 postcode! It's quite an imposing building, in it's time was obviously quite an impressive hotel.