We stayed there for 8 nights. The apartment is big and clean (somebody will come and clean/make beds etc. everyday). There is fans in the living room and the bedrooms and also air conditioning in the bedrooms.
There is enough space outside to park a car. Aline (the owner) is in general very helpful and helped us beforehand with booking a taxi from the airport to the apartment, rental car etc. When we got there, she gave us a lot of tips for where to go, which beaches to visit and how to spend our time.
There are supermarkets, a pharmacy, several take aways and restaurants in very close proximity (walkable in 2-3 minutes). You can walk to the Beau Vallon beach in about 10 minutes. The aparment is also very close to major roads (coastal road as well as the road to Victoria - the capital), which makes travelling anywhere really easy.
Overall, we enjoyed our time there very much and would recommend the Beau Vallon Residence to anyone traveling with up to 4 persons.