Mexico For 7 Nights???

Well it all depends on how much you are willing to spend. If you stay at an all inclusive, high end hotel or if you are easily pleased by not so high end. You have to consider that 7 days really turns into 5 days since 1 day to fly there and 1 to fly back. Also think of the location you want to stay which seems to me that you want to relax. Cancun is more of a party town. I would suggest a city south of Cancun called Playa Del Carmen which is about 40miles(64km) from Cancun. This is the place you can relax all day. There is a chain of hotels in playa called RIU that many people from England come it is popular hotel.I stayed for 10 days this past April and it ran me 4000 usd(2800eur) with flight for two people from Texas,USA.. But be warned that the beaches at these hotels are almost non-existent because they have been washed away and there are HUGE sand bags to try to stop the beach from disappearing. Good thing is that the city is a 5 mile(8km) taxi ride it would get you there fast or if you prefer you could walk it but not much people do it more than once,once they notice that is a good distance. If you don't mind going a little further south to the Grand Palladium Resort(s) this is the place to stay the rooms are way better and the beach is awesome. They are 4 resorts in one so you can pick which one you would like to stay. If you want an ocean view stay in the White Sands hotel.