It's kinda laughable saying that this place can sleep 4 people, as the fold -out mattress barely fits one and might be the most uncomfortable thing I've ever slept on. I couldn't even imagine fitting another person on it. The place is also a little loud with a gigantic fan intake just outside the balcony and kids in the apartment upstairs running around. Also, I wouldn't recommend coming during colder times, since the only way to heat the apartment is with an electric heater, and the apartment won't keep the heat in if you leave, meaning the stone floors will be akin to ice upon return.
That said, it's in a great location, and it's comparativly cheap, so all in all it's not a bad deal if you're one or two people looking for a place to be for a few days.