Mall
The mall with a bike stand. There's a café on the second floor facing the street where you'll find said bike stand. The mall is old fashioned. From the mall it's a fifteen minutes walk to the school.
Implicitly the mall is close to Christina's old middle school (Kyoko had all her schools within walking distance from home). Kyoko's cram school is close, as is her home.
Yukio lives close to the mall.
It's a ten minute bike ride to the station Ulf uses. Midway between the mall and the station there's a playground.
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School
The name Himekaizen Academy implies that the school started as an all girls school, but long before the story starts it became coed.
Entering the school yard, imagine you face the school. The building should have been erected in the 1960's or 1970's. It's not that important, but it gives a visual idea. We're not talking breathtaking architecture here. Two three story wings, three or four story main building (have yet to decide).
Behind you there are trees framing the school yard (Yukio saw this). Let's make those sakura for the sake of stereotyping. School yard is gravel or dust, not tarmac. (Kyoko kicks up sand)
Looking ahead you see the underside of the letter 'H'. Basically you're looking "up". Prominently displayed is a big clock on the wall of the main building. (Yukio saw this)
There's a left wing and a right wing. Classes 1 through 4 are located in the right wing, and 5 through 8 in the left. First years on the third floor, second years on the second and third years on the first. (Noriko reflected on this)
There are actually six classrooms on each floor per wing, but two are not used for lessons. (Ulf has noticed this)
I imagine a stairwell feeding each wing. When you exit the stairs on any floor you end up in a corridor with windows facing the "inside" of the 'H'. So you'll see the corridor on the opposing wing (unless you're on the first floor, but more on this later).
There are two classrooms to your left and two to your right (four classrooms on each floor on each wing). Every classroom has windows facing the "outside" of the 'H'. Each floor also have two more rooms that previously were classrooms. They're at both ends (bottommost and uppermost parts of the 'H'.
Right wing classroom-windows face the soccer field. (Soccer incident).
Left wing classroom-windows face the bike stands (confession events). From the classrooms, if you lean out of the windows, you can also see one half of the pool (pool circus event)
Behind the school ("over" the 'H') lies the gym hall and the pool (pool to the left of the gym hall).
First floor main building has shoe lockers directly inside the main entrance, and if you pass them you end up outside the cafeteria. Said cafeteria is flanked by the boys' and girls' locker rooms on each side. (I'm assuming walk-through locker rooms. You can access them from the main building corridor, but there are also exits on the side facing the gym hall) There's an infirmary on the first floor.
The second and third floor (main building) should have a corridor feeding the wings. The corridor also services special education classrooms (home economics, chemistry, etc.), club rooms as well as teachers' workspace and principal's office. All rooms should face the school yard and the corridor face the gym hall (I just can't imagine the principal's office facing the "backside" of the school).
The principal's office is on the fourth floor (Ulf being called there after the incident in the locker room)
The lower parts of the 'H' is connected by a roofed walkway (Ryu during entrance day), so I'll assume you'll have fire escapes all the way to the roof there as well.
Obviously there is a roof. This is a high school romcom. I NEED roof-scenes if I'm to cater to stereotypes. However, I haven't decided if your can walk from the roof on one wing to the other. There is a point in having the main building four stories and blocking access from one roof to the other. I could use this for scenes where characters can see other people but lack the means to quickly run there.
The new club room is located on the third floor in the left wing. It's the refurbished room next to 5:1.
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Stockholm Haven Café
Lies en-route to the closest train station to the school.
Main room filled with a mishmash of tables and chairs. There's an inner room on the inside of the counter. That room is furnished for 12 around a large table. Another 8 can be seated if you use foldable tables and chairs. Those are stored along one of the walls.
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Christina's home
One room, shabby flat. Tatami mats and futon.
Later in the story she moves to a luxury top floor apartment.
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Ulf's home
Three room modern flat. Amaya has her own bedroom. Ulf sleeps in the small living room on a futon. Two large and one small bookshelves in the living room. Also holds a table and Ulf's microscopic desk.
One very small bedroom is used as storage.
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Wakayama residence
Large house. Estimate eight rooms. Modern style.
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Holiday resort
Some 400 kilometres south (west) of Tokyo. Probably south from Ise. Incidentally it's not that far from the real world Wakayama, which is ironic as I made up that last name myself.
It's just outside some unnamed small town and within walking distance to the beach.
The quickest way (but the word quick is troublesome) is to take the Shinkansen from Tokyo to Nagoya and change to some regional southbound train hugging the east coast.
I'm imagining some old style onsen that was modernised during the sixties. As a result you have a rather shabby looking resort. The Nakagawa gig most likely attracted people working in Nagoya or Osaka/Kobe.
The hotel is large enough to accommodate close to a hundred guests provided quite a few share rooms. The onsen is divided into one male and one female part. There is also a smaller family bath, which gets used by the main cast. The family bath is not situated between the larger male/female baths, because otherwise we couldn't have the peeping incident.
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Red Rose Academy
Large complex. Has both a middle school and a high school. Elevator school.