Given that you've obviously already found Houzz, why don't you start here? Post clear pics of the room from each direction, with a diagram of the room layout. Supply information about your requirements, style preferences etc, and away you go!
I suggest starting a new dilemma (for each room maybe).
You'll get a much better response with pics in your original post.

Hi All, here's some pictures of my apartment. As you can see from the pictures, I just moved in so please do excuse the clutter. Next, I'm looking for modern space efficient look at this time. Also, I do like the dark wood and style type furniture but I would like to keep it spacious as possible.

In kitchen, I was thinking that an island may work well for both food prep and dining.

In the living room, I'm looking for an area which is more focused on a modern home office with possible a standing black desk next to the door which leads to the patio.

Any other ideas would be greatly appreciated and thanks in advance.

PS. I'll try to get the floor plans from the building manager and post them.

The pics and description are great, but the original post and question doesn't have pics (and there's no way to edit that). I think that's why 2 hours in no-one has answered.

To give this dilemma the best chance of succeeding, try starting a NEW dilemma, with pics in the first post.

And instead of "Recommendation for an online designer" ask for " Help with my new apartment PLEASE" or something like that

I was losing sleep, trying to decide on a light fixture for my great room. I used Laurel and Wolfe, who, for a very nominal fee, gave me really good advice, and a number of options within my budget. I was really pleased.
That said, I had a specific question- I can't say how well that would work for an entire place

Decorist.com has good reviews. Be cautious....have a good conversation about what you want before jumping in.

I would recommend DecoArt for your requirement of interior design service. They are thorough professionals and can help you with your home design needs from tip to toe. Just connect with them and they will give you more ideas on how the things will go.