We stayed in the apartment with our little baby. There was enough space for the three of us (and we could even place our pram in the corridor!). The bed is really nice and comfortable , the kitchen is tiny but you have all you need to have breakfast at the place. The bathroom is really small but it's written in the description so no surprises here. The only problem we met was a tiny elevator - the pram was entering inside only without wheels :(
Overall - nice experience in Elias's apartment. I recommend it (our baby approved it too !)