I want a puppy. What is the reality (highs and lows) of puppy ownership - especially in a small apartment?

I have been wanting a puppy for a while now. Great company, great for sense of security, great for getting me walking regulary and just generally a lovely, fun idea. I had a kitten and it was wonderul – however due to the busy road infront he was hit by a car :( The actual area I live is awesome though to take dogs for walks – beach and a number of playing fields plus a dog park nearby.

My main concern is the size of my flat – therefore what breed of dog would be suited to small apartment living. I can easily walk him twice a day thats not an issue. I would be concerned about leaving him at home while I was at work however.

What breed of dog would most likely suit me and my home? I dont want a ‘handbag’ dog breed. I want a sturdy little dog but also one which will be ok to be inside for a fair bit of the day – minus long works morning and evening.

Any advice or own experiences welcome as it is such a huge cost as well as commitment to an animals life that I want to make the right choice. Is it cruel to not let a dog have an outside area to spend most of their time in?