We've just today turned our dining room into a playroom for DD. The room had a big rug on the floor and original floorboards underneath (stained dark and not really been touched for over 30 years).
We've taken the rug up and were going to have bare floorboards with a big playrug in the middle of the room (which would be smaller than the old rug so quite a bit of unstained generally mucky looking floorboards on show). this doesn't bother me too much but we've found the room is now really breezy from the holes in the floorboards and also quite echoey (and we have neighbours next door to the playroom we need to be wary about).
We push the buggy into the playroom after walks for DD to have a sleep in her buggy (she only naps in the buggy and usually has to be walked to sleep) so the floor needs to be easy to clean and withstand not showing up dirt and mud from the buggy. It seems the floorboards we have are quite slidey and I DD has nearly fallen over alot today on them (not ideal).
So, we're not sure what to do. Do we just buy the big playrug and hope for the best with the echoeyness/slippiness on the floorboards (which won't look very nice as the floorboards arn't in very good condition) but at least will be cleanable for when the buggy comes in the room or do we splurge on a carpet which is quite dark so it won't show up stains (esp as dd gets older and gets more messy things to play with - she is 1yo), or maybe a big and cheap regular rug from ikea? I really want the room to look complete and like it's meant to be like that IYKWIM. I hate everything all higgldy piggldy.
If we do get a carpet any recommendations on what to get or not get? Should we just buy a really cheap one on the basis it will only last a few years? How cheap would a really cheap one be?
I don't think we can afford wooden floors on top of floorboards plus we have piping underneath, so laminate would be a no go because of this too (plus wouldn't solve the slippy issue)
Apologies for typos 
Thanks for your help (in hope) 