Hi, Maria!
I’m very happy that you have a 2 weeks vacation next month (or you can say "a 2 week vacation"). The most pleasant fact about your vacation is that you have an opportunity to travel not rather than just spending time at home (Instead of "travel" perhaps the sentiment you're looking for is that Maria has the opportunity to "see the world" or "broaden her horizons"?). As you know, travelling is my favorite hobby, so I slightly envy you slightly. Of course, it’s a I'm joking 

Let us go back to your question - what countries and cities I would I recommend you to visit.

You has haven't given no me any details for me, so I will offer two different variants for options to you:
If you prefer to spend your vacation at the beachfront, then I advise you to go somewhere in Thailand. If you would like to have more activities and sightseeing then you should go to Amsterdam.

Now I’ll give you some more information about both of these tourists places.

As for Thailand (for example, Pattaya), there are perfect gold sand beaches, warm and purest oceanic water (or you could say "the purest, warm ocean water") (almost like you find in the bath), delicious seafood, and the last but not the least, Thai massage. People are friendly and smiley smiling, the atmosphere is relaxed. Actually, you can combine two types of amusements there – swimming and tanning in the daytime (or make have some beauty-treatments) and dancing/drinking cocktails/meeting with new people in the evenings. The Nightlife is full of different events ("attractions" is probably better than "events") there.

Amsterdam is completely different. The first thought of people have when they hear about this city is something about drugs and the red lights district. However, this is just one side of the city. If you look at it from the other side, you can see a small old European city with beautiful houses, narrow streets and channels canals. There are many activities for all tastes too also: a great number of interesting museums and huge, and lovely parks (The Vondelpark is my favorite). It’s interesting just walking through the streets and looking at buildings. I know that you are fond of flowers and birds, so I have good news for you. When you plan to be there ducks give birth to ducklings, so you will be able to make take fabulous photos (you always "take" photos, never "make"). Moreover, the spring is the time of tulips flowering in Holland, so you will have a chance to visit the flower park, which is called Keukenhof.

I hope that this information will help you to make the right choice. If you have any questions don’t hesitate to ask me.

This is really good Natalya, I was in Amsterdam last week and had a great time walking around and visiting the parks and musuems just as you describe.