This is a wonderful apartment with great hosts in a great neighborhood.
The apartment is comprised of a bedroom (for the hosts) and a living / dining room (which serves as the guest room for airBnB). That room is large, airy, and sunny. I was comfortable hanging out and working. As they warn, there are light curtains for privacy (but not keeping out the light). I would add that you should plan on bringing a book light (as the lamp is inconvenient for reading). The room, kitchen, etc. were very tastefully decorated--personal without being cluttered. The apartment is on the fourth floor--which for many will feel like the fifth floor because of ceiling heights; and there is no elevator; so not everyone can have the pleasure of staying here...
Which also means missing out on Victor's hospitality (Karla wasn't around when we were). Victor has a blog indicating some good restaurants, etc. He was eager to talk through fun things to do in the area. And every interaction was pleasant and easy.