Hi everyone!
I'm new to this site, and I'm afraid I'm diving straight in with a question that could result in lots of pie-flinging - I genuinely don't want to start an argument!

So, I'm finally in a position to replace my beautiful 1969 5'6" Bechstein Model L. It's a wonderful piano in its own way, and it's given me nearly 15 years of joy; but while some people hear its clear, pure, European (whatever that means) tone, I'm really missing the "colour" and "thickness" of a Steinway sound. I'm including an image of my current Bechstein because its on my desktop anyway, and it'll give you all a better idea of my tiny front room!
Anyway, in my heart of hearts, I've always wanted a Steinway. I had a look at some model 'S's, both Hamburg and NY, old and modern, and with the best will in the world, they're just too small to sound good. For their size, they're remarkable, but ... well, you know!
A new Steinway is completely out of my price bracket, but I've found a 1920s Steinway 5'10" Model 'O' which has been rebuilt by a Steinway Agent here in the UK with proper Steinway parts. It has the original soundboard, but a brand new action. It's a delight to play, and the tone is pure "Golden Era" Steinway. I love it! Probably due to its age, it's significantly less punchy than, say, a modern NY Model 'M' that I played, but I still think it's a fair bit louder than my Bechstein.
Living in the UK as I do, we have absolutely TINY rooms! My room is 11 feet x 18 feet, and the ceiling is 7.5 feet high. As you can see, it's fully carpeted and there are also couple of sofas, a rug and curtains there to soak up the sound- it's far from minimalist!
Do you think this piano would be controllable in such a small room? I don't want to feel constantly restrained when I'm playing it, but I really don't want to go any smaller if I can help it - I don't want to lose the tingle in my "gentleman's area" that the rich bass gives me!

Any words of advice would be greatly appreciated! I remember banging away on Model Bs in tiny practise rooms at music college and not thinking twice about it, but that was years ago, and things are a bit different in your own home!
Oh, I'll also attach a picture of the Steinway as well - I just love looking at it!
Thanks ever so much, everyone. Happy practising!
