I prefer my Power Armor room to look more like this. In all three playthroughs, the Power Armor depot is always the bottom floor, and where I set the spawn point.
I never really get fancy with the building's layout. It's always a three story building. I've tweeked the floor sizing a bit through three playthroughs, with the third one having an extended bottom floor for more Power Armors.
The second floor is always the gun shop. I lay out my guns rather than store them in containers. Looks cooler, and they are easier to find. All the crafting tables stay here, for quick easy access.
Top floor is always the room with the bed. Seems to be the most popular spot for the settlers, despite making their pads sweet too. Anyways, the bedroom from my first playthrough came out better than this one, it looked more "wastelander", with random junk all over the place. I prefer a junky, more wasteland looking room, feels more authentic. Nicer buildings seem out of place here.
One thing I thought was beyond stupid was destroying the actual vault the Institute was living in. As soon as the evacuation order was given, I'd have moved all the NPC's I liked right in. Seems these people have no idea how awesome a hot shower would be, or a nice botany lab. These dolts can't imagine how great life would be if WE used this bad ass reactor the Institute made. Funny how the Brotherhood wouldn't think that way, either. Would make the PERFECT new headquarters for them in the Commonwealth.
But nope.
BLOW IT UP.
Anybody wonder just how pissed off the people who lived within the blast radius would be after you pushed the button. I'm sure they were real pleased. Best for the Commonwealth, right?