Gregory's apartment is fabulously located, on the first floor of a beautiful old apartment building, right in the old part of the city. Gregory was really accommodating and made a big effort to meet me for an unforeseen early check in.
I slept on the sofa bed, which wasn't super comfortable (there is a hard ridge down the middle) but my friend said the bed on the mezzanine was very comfortable. Unfortunately I found the apartment noisy, not because of outside noise, but rather people coming and going in the building all night, as the main living room leads straight out to the communal hallway. It was a Friday night, so perhaps it's better during the week.