I'm sorry to bother you all with a question like this, but after being back at the piano and putting in some disciplined practice time I've decided to reward myself with a new baby-grand to replace the itsy-bitsy little console piano I'm using noow (really it sounds like each string is being strangled!)

. But my concern is that the only room I can fit in a baby grand (5'3 - I know I should go for the biggest I can get but this is really it) has a series of 3 french door-style windows along the western wall with centre pane windows in them - which gets afternoon light. I'm planning on placing the piano as far from the windows as possible and the temperature in the room is very well regulated, but the piano will still get some light shining on it throughout the afternoon - the back of the piano will be facing the windows.
My question is how bad will this be for the piano? Bad enough to discard the idea of getting the piano? I have thought of getting a folding screen to place in front of the 2 windows that would shine on the piano. The piano I'm planning on getting is the polished ebony finish, so I'm not too worried about sun-bleaching (so I'm told this is not a big factor with black pianos?)... but I don't want the sun to warm the piano and cause warping/tuning problems.
I'm not sure this is an appropriate question for this forum - if its not my apologies in advance! But any insight you might be able to give would be greatly appreciated (I'm really excited about getting a new piano!

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Oh - I've thought about big thick curtains but I'm not allowed to install anything on the walls
