Tent advise first buy

Hi all! I want to do a hike and camping trip this summer. Now I had this idea to buy a tent now allready because they are cheaper in the sale from last season. I found this tent: Stoic-FästaSt. 2P - 2-persoonstent. The only problem is don't know what makes a good tent. I have very little experience. I did some camping but mostly as a teenager or at festivals.

I'm going to use it solo, but I like a 2 person tent because it gives some extra space and one person tent seems a bit claustrophobic. Is 43 x 16 x 16 cm small enough for backpacking? Is the 173 euro's a good deal or will I be able to find plenty of other tents like this in the next comming months?

Greatful for any advise.
Cheers.