Ответ:

FlatHouse
Advantages:
1. It is usually cheaper.
2. It is easier to clean and maintain.

Disadvantages:
1. There is less space.
2. There is usually no private garden.
Advantages:
1. It has more space.
2. It usually has a private garden.

Disadvantages:
1. It is usually more expensive.
2. It takes more time and money to maintain.