Im sorry to hear about your dissapointments, but some things has to be said:
Menorca is not a tropical island. It has winter season, with cold temperatures (around 0-3 degrees) and a lot of humidity. The humidity in the air reaches 93%, and it makes very difficult to have the apartment dry. If you come in april, the island is still cold and humid. People spends a lot of money in electric dehumidifiers. The swimming pools are closed in the island until june, like everywhere in spain in winter/spring. Some information about the place you go is recommended before saying things that seems failures of the apartament and leave a valoration including your misinformation.
The urbanization has a street beside, yes. Otherwise, you should arrive walking. Maybe in a house in the middle of the country you will have not car sounds, but it will have another prices. Otherwise, there are not so much traffic, is a very quiet area, but it depends on what you expected.