This is our family home. My great grandparents built the original structure in 1895, and each succeeding generation added to it. Supposedly, it is the 3rd oldest home in town.
The room behind the Kranich & Bach is a guest BR. The room next to the fireplace is the "Sun Porch". The Bechstein sits in the northwest corner of the Living Room on exterior walls. The west and north side of the house has a large exterior porch that wraps around the house so the piano gets no direct sunlight. I normally keep the lower shudders closed during the day anyway. The vents for the A/C have diverters to direct the air under and away from the soundboards of both pianos.
The piano room:
1928 Kranich & Bach, 7'3", ribbon mahogany
1997 C. Bechstein, Model B, 6'10", polished ebony

It took 3 solid days of driving to get from VA to NM. The piano was off-loaded by local piano movers from the 16 ft truck I rented to haul the piano plus 5000 lbs of other household goods. Everything went as planned. No problems.
The house is at 44% RH which is the same RH as the house in VA. (Outside the temp has been in the high 90s - low 100s during the day and low 70s at night. The outside RH ranges from mid 40s% - mid 50s% in the early morning to the high teens - low 20s% during the heat of the day.) The Bechstein sounds good but I still may have it tuned in about a month or so, after it fully acclimates to its new home.
It's nice to finally have adequate space to play the Bechstein with the hood up. Acoustically, the LR seems to accommodate the piano's size and power fairly well. When I open up all the doors to the LR the piano reverberates throughout the entire first floor.
The K&B is the piano I learned on. It needs to be rebuilt. I may have the work done or, depending on what the future holds, I might take on the project myself. Right now the K&B is just a nice piece of furniture ... a place to organize my sheet music and display family photos. After it is rebuilt it might be a pretty sweet piano.
JP