Everything was great! The flat was pretty, clean and just as described. When you sit on the balcony it can sometimes be a bit loud, as a bigger street is around the corner, but we didn't really bother. Also, the apartment is pretty central. You can take the bus to the city center or to a very nice beach (Illetes) and you have a lot of bars and restaurants in walking distance. The "hip" district Santa Catalina can also be reached by feet in 15mins.
The host Jennifer was really nice and waited for us, though we were pretty late on the day of arrival. She gave us some tips and was always available if we had any questions - also before our journey.
I can definitely recommend Jennifer and her apartment and I am looking forward to come back some time.