I want to purchase a tent. Any campers/trekkers/hikers out there that can help me make a well thought out decision?

I’m a total noob when it comes to camping.
Soon we will visit a place in nature and we want to camp on the beach.
Our desired tent is big enough to house two adults (comfortably), when folded/packed is small (should fit in a suitcase and cabin luggage), doesn’t break the bank, has a floor (from the same material, I guess), a zipped ‘door’, and last but not least (if available) a transparent roof section.
Does this, or something that comes close, exist?
Thanks in advance!