@uwiikz- sounds like you are on the right track in dealing with the room; to me, parquet would be better than tile, but is still a hard surface; I have wooden floors covered with a large old Persian rug.
I use bass traps in various corners, have fairly thick cellular or honeycomb type window shades to deal with the glass in the side windows-- the front wall has large windows that are covered first by a thick somewhat absorptive material similar to sail cloth, with several layers of curtains heavily bunched together over them-- it's enough to eliminate that window as a factor. Do read Jim Smith's book- he does in-room set ups at people's homes for a fee and a lot of basics are covered in the book (travel expenses would exceed his fee in your case), but the more familiar you are with your own system in your room, the better you can dial it in; my system took a few years to get right when I lived in NY and when I moved to Texas, and had a new to me room in an old house, I had a pretty good idea of how it would lay out. It still took time to dial it in though-- through measuring, listening and moving the speakers in slight increments. So, by the time you have readied your dedicated room, you'll probably have more experience with the system, what it can do and where its weaknesses are. Small changes can make big differences in set up, particularly with turntables and speaker positioning in the room.
I don't like over damped rooms with too much treatment- they sound too dead to me. You'll find a balance, the more you listen the more you become accustomed to what the equipment can do and if you are willing to experiment a little, you can optimize positioning.
The turntable does require something that is not susceptible to footfalls and it is very heavy, as you know. If you look at my system page, you'll see how I have it mounted on an HRS platform, which in turn, sits on a big Minus K isolation platform. Franc sells an active isolation device but it isn't really meant to deal with footfalls- he assumes you'd be on a concrete slab but the active devices are typically used to improve the overall performance of the equipment by isolation. Mike Lavigne, who is probably one of the best known members here, has done a deep dive on these things and would be a good source of information about them if you are curious. Just note that they won't solve a footfall problem; the Minus K will.
I use bass traps in various corners, have fairly thick cellular or honeycomb type window shades to deal with the glass in the side windows-- the front wall has large windows that are covered first by a thick somewhat absorptive material similar to sail cloth, with several layers of curtains heavily bunched together over them-- it's enough to eliminate that window as a factor. Do read Jim Smith's book- he does in-room set ups at people's homes for a fee and a lot of basics are covered in the book (travel expenses would exceed his fee in your case), but the more familiar you are with your own system in your room, the better you can dial it in; my system took a few years to get right when I lived in NY and when I moved to Texas, and had a new to me room in an old house, I had a pretty good idea of how it would lay out. It still took time to dial it in though-- through measuring, listening and moving the speakers in slight increments. So, by the time you have readied your dedicated room, you'll probably have more experience with the system, what it can do and where its weaknesses are. Small changes can make big differences in set up, particularly with turntables and speaker positioning in the room.
I don't like over damped rooms with too much treatment- they sound too dead to me. You'll find a balance, the more you listen the more you become accustomed to what the equipment can do and if you are willing to experiment a little, you can optimize positioning.
The turntable does require something that is not susceptible to footfalls and it is very heavy, as you know. If you look at my system page, you'll see how I have it mounted on an HRS platform, which in turn, sits on a big Minus K isolation platform. Franc sells an active isolation device but it isn't really meant to deal with footfalls- he assumes you'd be on a concrete slab but the active devices are typically used to improve the overall performance of the equipment by isolation. Mike Lavigne, who is probably one of the best known members here, has done a deep dive on these things and would be a good source of information about them if you are curious. Just note that they won't solve a footfall problem; the Minus K will.