What I am going to recommend may well raise a few eyebrows on this subject; I am basing this suggestion on the alternatives for a $7000 USD investment, and the usable value received in exchange for the money. Of course a new grand at least 6' or 7' is more desirable -- but let's be practical, people! The items on the floor consist of a cheezy no-name grand piano, a used grand piano of dubious maintenance history, a good new grand piano that the person cannot afford, an upright piano that will never have the right touch nor ability to play pianissimo, much less fff.
Given the amount of money you have to spend, and the space considerations of your bedroom, may I suggest looking into a GOOD QUALITY electronic digital grand piano in the interim? Please read on:
Find a Yamaha dealership, and try out their Clavinova model CLP-175 digital piano. Yes, yes, I know -- we all have preconceptions of what cheesy contraptions that come to mind when we hear the words "digital piano".
The product I am recommending you consider is a valid musical instrument -- for the amount of money and floor space you have at your disposal.
The CLP-175 has wooden keys with a weighted hammer action -- I have seen an in-store display of a cutaway version of their action. There are metal rods attached to the action of each note, and each rod uses gravity and inertia to modulate the action of the key's note. These hammer actions do nothing to contribute to the sound of the piano; they are present only to assist in the touch.
An electronic digital piano does not require semiannual tuning. Its intonation is independent of heat, humidity and other environmental changes.
This particular piano is roughly shaped in the form of a small grand piano, but has a big sound. It even has adjustable reverb. Moreover, when it comes time to making a recording of your music, you can do so WITHOUT a microphone(!) and the associated ambient room noise. Simply plug the instrument's outputs into a suitable recording device and you are on your way.
The Yamaha CLP-175 retails (as of this date of writing) at $6595 USD; they can be obtained for $6000 or slightly higher, plus sales tax.
Now consider the cost of the smallest Yamaha grand -- a measly 4'11", the smallest size they make can be obtained for about $9000 USD. The action of the 4'11" is about what you'd expect for the bottom of the line grand piano. Larger pianos cost thousands more. Please stay away from pianos of Chinese and Korean origin for the time being, as they have quality and longevity problems.
The CLP-175 contains sounds sampled from Yamaha's $150,000 model CFIII 9' concert grand. Will it fool the listener into thinking he's listening/playing a 9' grand? Of course not. But the sound, feel and musicality of a $6000 electronic grand Yamaha beats the pants off any new grand costing 50% more.
In addition, the weight of the CLP-175 is about 1/4th that of a grand piano.
Come to think of it, I am beginning to sound like a Yamaha salesman. I apologize for rambling, but for the money -- go for a NEW instrument (with warranty), and you will be far happier in the next 5 to 10 years. Unless you have a certified piano technician (who is NOT associated with a given dealership) you run the risk of buying someone else's maintenance nightmare of a piano.