I'll use this thread for this question.

Booked a few day trip as a holiday.
Looking at spending a couple of days in Sofia (will that be enough?), and looking at staying at the IC. Prices range from £108/night for the base room up to say £159 for a King Classic / Mountain View / Lounge access (have Spire Ambassador status)
(£18/night if I want 5k bonus points as well). Around £400 for 2 nights if I go for the 10k points and 1 day cancellation in case BA decide to go on a cancelling spree again.
Is this actually expensive for Sofia?

Paid £55 at the HGI at OTP airport a while ago (£81 the second time). Not the same country, but don't think Bulgaria is exactly overly modern as of yet?

Contemplating popping somewhere else for a couple of days before returning to Sofia for the return flight. Anywhere recommended should I decide to look at this?
i.e. Bucharest, Skopje etc. if I want to leave the country.

Was looking at SOF-LHR-SOF. although my dates have CE out of a Monday, return in economy on Wednesday (no CE available on some days or ££££), so I'd be staying in London for a couple of nights unless there was something cheap out.