@Starke: The mapping itself isn't bad at all at first glance. However, it's kind of sloppy.
Map one - it's very big, but the middle area is completely empty. It's a restaurant, so why are the tables restricted like that? Maybe put more to the middle or even decrease the size of the map.
Map two - toilet room? Well, looks ok. However, what is that toilet up there for? I mean, you have section for men, section for women... And one toilet for disabled people... And one toilet for nobody? Then a storage room and a shower room... Illogical, since shower rooms (for who anyway) are very humid and storage rooms needs to be dry.
As for the hospital, have you ever seen a hospital up close? Cars, people, visitors, patients, ambulances,... Whatever. But it's rowdy and crowded. People come and go... Maybe you can try to open some windows too. Otherwise it looks very bland (so again unnecessarily huge). Then the area in front of the hospital looks kinda sloppy regarding realism. It's a dead end, yet there's a bus stop, 4 taxis and 4 normal cars... Where in the world does the bus turn around? I would understand all those cars, since cars are more maneuverable, but I definitely don't want to try that. The last thing I want to do with my birth giving wife is trying to park a car in the opposite direction.
There's nothing bad to say about map 4. But you can again play more with the school, open some more window... Otherwise it's unnecessary to show such a huge school if it's going to have a monotonnous pattern. Maybe also decorate some windows with flowers.
Map 5 looks like a disco bar to me. It has two cashiers, one who serves drinks and one who does whatever... But again, such a bland disco bar? Also, I'm not too sure about the vending machines regarding realism. Disco bars refrain from vending machines, because they want to sell their stuff.. At least in my country.
Map 6.. Such a huge map... And a modern train. But where is everyone? Again, lots of empty space.
Map 7 looks fairly good. Just the bathroom is too huge (for our country's standards though, not sure how is it in other countries) and a TV definitely should NOT be facing the wall (unless there are naughty children). And the half closet looks kind of weird next to the full closet.. Also, the kitchen could use some more furniture for food. You have a fridge for cold food, but what for bread and other stuff that needs warm storage?
I'll keep out of any comments on the last map though, because I don't have any idea about beaches.