If you only have one day, it is a good idea to stay close to the airport. Dubai is a big city and you have to now that you will have to commute there either by car or public transport.
If you are looking for a good hotel with outstanding views I can recommend Hotel Address Boulevard.
So, what to do in Dubai first? Wake up really early for sunrise Dubai Safari! There are several available options for the tourists to get their safaris selected from. Generally, all major hotels and resorts will get such trips organized when asked for by their clients. You can find more information here.
If you never have been in the desert it is worth it to wake up early and experience it! The views are really breathtaking.
The Marina, called initially Westside, looks set to become one of the main tourist attractions for the travellers in the years to follow. Marina offers plenty of restaurants and cafes, so it is a prefect place to go for lunch after your morning desert safari. Here you can also admire the outstanding, modern architecture of the city.
The perfect ending of Dubai experience will be climbing some hight skyscraper for amazing views! I will recommend Dubai Frame. It is a bit outside of the city centre, so you will have a perfect view of the whole city. It also has a glass floor through which you can see the ground! Wait there for the sunset to have the perfect ending of the day!