The studio/loft is quite nice! It's cozy, but the space is arranged well and it feels comfortable. My friend slept on the bed above and I slept on the couch below, which was just fine for sleeping. I never met Fabiana or Bárbara, but I met two people who worked for them (Anderson and Melisa, I believe; the former at check-in, the latter at check-out), both of whom were helpful and very nice.

However: I do not recommend staying in Lapa during Carnaval. The "Arcos de Lapa", only a two-minute walk from the apartment, are a popular meeting spot for hordes of beer-drinking, street-urinating revelers. We had a hard slog getting home. Every night, we had to try to ignore the overpowering stench of pee as we made slow progress weaving through the crowds while simultaneously avoiding pools of urine and avoiding getting run over by taxis.

The apartment itself is safe (24-hour doorman) and quiet (it's on an upper floor a few streets away from the hubbub), but getting to and from the apartment during Carnaval is a struggle.